spec: Rename required in mandatory attributes

The term "required" is quite overloaded in the specification context.
Use "mandatory" instead.

Shorten the phrase "explicitly defined attributes" to "explicit
attributes".

99 files changed, 111 insertions, 112 deletions

diff --git a/spec/spec/appl-config-group-member.yml b/spec/spec/appl-config-group-member.yml
index 954bd36f..3c40703f 100644
--- a/spec/spec/appl-config-group-member.yml
+++ b/spec/spec/appl-config-group-member.yml
@@ -16,7 +16,7 @@ spec-info:
     attributes: {}
     description: |
       It defines the application configuration group membership role of links.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Application Configuration Group Member Link Role
 spec-type: appl-config-group-member
 type: spec
diff --git a/spec/spec/appl-config-group.yml b/spec/spec/appl-config-group.yml
index 03e62449..b7e72f45 100644
--- a/spec/spec/appl-config-group.yml
+++ b/spec/spec/appl-config-group.yml
@@ -30,7 +30,7 @@ spec-info:
         spec-type: requirement-text
     description: |
       This set of attributes specifies an application configuration group.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Application Configuration Group Item Type
 spec-type: appl-config-group
 type: spec
diff --git a/spec/spec/appl-config-option-constraints.yml b/spec/spec/appl-config-option-constraints.yml
index 1e33835a..0fde7a94 100644
--- a/spec/spec/appl-config-option-constraints.yml
+++ b/spec/spec/appl-config-option-constraints.yml
@@ -35,7 +35,7 @@ spec-info:
       This set of attributes defines application configuration option
       constraints.  Additional constraints can be added through the links of
       the item using the ${constraint-role:/spec-name}.
-    required-attributes: none
+    mandatory-attributes: none
 spec-name: Application Configuration Option Constraint Set
 spec-type: appl-config-option-constraints
 type: spec
diff --git a/spec/spec/appl-config-option-feature-enable.yml b/spec/spec/appl-config-option-feature-enable.yml
index 024bac46..d7b37088 100644
--- a/spec/spec/appl-config-option-feature-enable.yml
+++ b/spec/spec/appl-config-option-feature-enable.yml
@@ -17,7 +17,7 @@ spec-info:
     description: |
       This set of attributes specifies an application configuration feature
       enable option.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Application Configuration Feature Enable Option Item Type
 spec-type: appl-config-option-feature-enable
 type: spec
diff --git a/spec/spec/appl-config-option-feature.yml b/spec/spec/appl-config-option-feature.yml
index b4ecdcfa..a54154ae 100644
--- a/spec/spec/appl-config-option-feature.yml
+++ b/spec/spec/appl-config-option-feature.yml
@@ -22,7 +22,7 @@ spec-info:
     description: |
       This set of attributes specifies an application configuration feature
       option.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Application Configuration Feature Option Item Type
 spec-type: appl-config-option-feature
 type: spec
diff --git a/spec/spec/appl-config-option-value.yml b/spec/spec/appl-config-option-value.yml
index 7842d2bb..96abef0d 100644
--- a/spec/spec/appl-config-option-value.yml
+++ b/spec/spec/appl-config-option-value.yml
@@ -29,7 +29,7 @@ spec-info:
     description: |
       This set of attributes specifies application configuration initializer or
       integer option.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Application Configuration Value Option Item Type
 spec-type: appl-config-option-value
 type: spec
diff --git a/spec/spec/appl-config-option.yml b/spec/spec/appl-config-option.yml
index 7759f408..f41bda80 100644
--- a/spec/spec/appl-config-option.yml
+++ b/spec/spec/appl-config-option.yml
@@ -42,7 +42,7 @@ spec-info:
         spec-type: requirement-text
     description: |
       This set of attributes specifies an application configuration option.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Application Configuration Option Item Type
 spec-type: appl-config-option
 type: spec
diff --git a/spec/spec/build-action-check-cc.yml b/spec/spec/build-action-check-cc.yml
index 0b7796b1..b784c959 100644
--- a/spec/spec/build-action-check-cc.yml
+++ b/spec/spec/build-action-check-cc.yml
@@ -25,7 +25,7 @@ spec-info:
         spec-type: str
     description: |
       This set of attributes specifies a check done using the C compiler.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Build Option C Compiler Check Action
 spec-type: build-action-check-cc
 type: spec
diff --git a/spec/spec/build-action-check-cxx.yml b/spec/spec/build-action-check-cxx.yml
index 64699127..620254e1 100644
--- a/spec/spec/build-action-check-cxx.yml
+++ b/spec/spec/build-action-check-cxx.yml
@@ -25,7 +25,7 @@ spec-info:
         spec-type: str
     description: |
       This set of attributes specifies a check done using the C++ compiler.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Build Option C++ Compiler Check Action
 spec-type: build-action-check-cxx
 type: spec
diff --git a/spec/spec/build-action-set-test-state.yml b/spec/spec/build-action-set-test-state.yml
index 28aa0894..c630c8f8 100644
--- a/spec/spec/build-action-set-test-state.yml
+++ b/spec/spec/build-action-set-test-state.yml
@@ -20,7 +20,7 @@ spec-info:
         of items, there is no way to check if the name specified by the
         attribute key is valid.
       spec-type: build-test-state
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Build Option Set Test State Action
 spec-type: build-action-set-test-state
 type: spec
diff --git a/spec/spec/build-action.yml b/spec/spec/build-action.yml
index 462e03f6..1b3302e5 100644
--- a/spec/spec/build-action.yml
+++ b/spec/spec/build-action.yml
@@ -219,7 +219,7 @@ spec-info:
         spec-type: none
     description: |
       This set of attributes specifies a build option action.
-    required-attributes: exactly-one
+    mandatory-attributes: exactly-one
 spec-name: Build Option Action
 spec-type: build-action
 type: spec
diff --git a/spec/spec/build-ada-test-program.yml b/spec/spec/build-ada-test-program.yml
index 2425f858..21518735 100644
--- a/spec/spec/build-ada-test-program.yml
+++ b/spec/spec/build-ada-test-program.yml
@@ -89,7 +89,7 @@ spec-info:
       ``enabled-by`` attribute value which is controlled by the option action
       :ref:`set-test-state <SpecTypeBuildOptionItemType>`.  If the test state
       is set to ``exclude``, then the test program is not built.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Build Ada Test Program Item Type
 spec-type: build-ada-test-program
 type: spec
diff --git a/spec/spec/build-bsp.yml b/spec/spec/build-bsp.yml
index 3660da67..4258d08f 100644
--- a/spec/spec/build-bsp.yml
+++ b/spec/spec/build-bsp.yml
@@ -82,7 +82,7 @@ spec-info:
         spec-type: build-source-list
     description: |
       This set of attributes specifies a base BSP variant to build.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Build BSP Item Type
 spec-type: build-bsp
 type: spec
diff --git a/spec/spec/build-config-file.yml b/spec/spec/build-config-file.yml
index ed050b68..ca196778 100644
--- a/spec/spec/build-config-file.yml
+++ b/spec/spec/build-config-file.yml
@@ -45,7 +45,7 @@ spec-info:
       This set of attributes specifies a configuration file placed in the build
       tree.  The configuration file is generated during the configure command
       execution and are placed in the build tree.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Build Configuration File Item Type
 spec-type: build-config-file
 type: spec
diff --git a/spec/spec/build-config-header.yml b/spec/spec/build-config-header.yml
index 98a332a2..647f847c 100644
--- a/spec/spec/build-config-header.yml
+++ b/spec/spec/build-config-header.yml
@@ -35,7 +35,7 @@ spec-info:
       written to the configuration header file during the configure command
       execution.  To have all configuration defines from sibling items
       available it is recommended to link them in the proper order.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Build Configuration Header Item Type
 spec-type: build-config-header
 type: spec
diff --git a/spec/spec/build-default-by-variant.yml b/spec/spec/build-default-by-variant.yml
index 4d37dda4..5a6e7fa4 100644
--- a/spec/spec/build-default-by-variant.yml
+++ b/spec/spec/build-default-by-variant.yml
@@ -21,7 +21,7 @@ spec-info:
         spec-type: list-str
     description: |
       This set of attributes specifies build option default values by variant.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Build Option Default by Variant
 spec-type: build-default-by-variant
 type: spec
diff --git a/spec/spec/build-dependency.yml b/spec/spec/build-dependency.yml
index aecde8b0..9f12bb71 100644
--- a/spec/spec/build-dependency.yml
+++ b/spec/spec/build-dependency.yml
@@ -16,7 +16,7 @@ spec-info:
     attributes: {}
     description: |
       It defines the build dependency role of links.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Build Dependency Link Role
 spec-type: build-dependency
 type: spec
diff --git a/spec/spec/build-group.yml b/spec/spec/build-group.yml
index c0dd1c63..643637d1 100644
--- a/spec/spec/build-group.yml
+++ b/spec/spec/build-group.yml
@@ -57,7 +57,7 @@ spec-info:
       items.  The ``includes``, ``ldflags``, ``objects``, and ``use`` variables
       of the build item context are updated by the corresponding attributes of
       the build group.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Build Group Item Type
 spec-type: build-group
 type: spec
diff --git a/spec/spec/build-install.yml b/spec/spec/build-install.yml
index 84e5f66b..cb6ce9bf 100644
--- a/spec/spec/build-install.yml
+++ b/spec/spec/build-install.yml
@@ -22,7 +22,7 @@ spec-info:
         spec-type: list-str
     description: |
       This set of attributes specifies files installed by a build item.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Build Install Directive
 spec-type: build-install
 type: spec
diff --git a/spec/spec/build-library.yml b/spec/spec/build-library.yml
index a48644ac..de5cfe1a 100644
--- a/spec/spec/build-library.yml
+++ b/spec/spec/build-library.yml
@@ -65,7 +65,7 @@ spec-info:
       This set of attributes specifies a static library.  Library items may use
       additional objects provided by ${build-objects:/spec-name} items through
       the build dependency links of the item.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Build Library Item Type
 spec-type: build-library
 type: spec
diff --git a/spec/spec/build-objects.yml b/spec/spec/build-objects.yml
index 2192cb07..0453619d 100644
--- a/spec/spec/build-objects.yml
+++ b/spec/spec/build-objects.yml
@@ -55,7 +55,7 @@ spec-info:
     description: |
       This set of attributes specifies a set of object files used to build
       static libraries or test programs.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Build Objects Item Type
 spec-type: build-objects
 type: spec
diff --git a/spec/spec/build-option.yml b/spec/spec/build-option.yml
index b05275aa..86384b8f 100644
--- a/spec/spec/build-option.yml
+++ b/spec/spec/build-option.yml
@@ -72,7 +72,7 @@ spec-info:
         spec-type: build-option-name
     description: |
       This set of attributes specifies a build option.
-    required-attributes:
+    mandatory-attributes:
     - actions
     - default
     - default-by-variant
diff --git a/spec/spec/build-script.yml b/spec/spec/build-script.yml
index dcbe498c..9cce6f03 100644
--- a/spec/spec/build-script.yml
+++ b/spec/spec/build-script.yml
@@ -100,7 +100,7 @@ spec-info:
     description: |
       This set of attributes specifies a build script.  The optional attributes
       may be required by commands executed through the scripts.
-    required-attributes:
+    mandatory-attributes:
     - do-build
     - do-configure
     - prepare-build
diff --git a/spec/spec/build-start-file.yml b/spec/spec/build-start-file.yml
index d82722bf..b79db900 100644
--- a/spec/spec/build-start-file.yml
+++ b/spec/spec/build-start-file.yml
@@ -49,7 +49,7 @@ spec-info:
     description: |
       This set of attributes specifies a start file to build.  A start file is
       used to link an executable.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Build Start File Item Type
 spec-type: build-start-file
 type: spec
diff --git a/spec/spec/build-test-program.yml b/spec/spec/build-test-program.yml
index f2fc4d0d..0f96964b 100644
--- a/spec/spec/build-test-program.yml
+++ b/spec/spec/build-test-program.yml
@@ -77,7 +77,7 @@ spec-info:
       ``enabled-by`` attribute value which is controlled by the option action
       :ref:`set-test-state <SpecTypeBuildOptionItemType>`.  If the test state
       is set to ``exclude``, then the test program is not built.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Build Test Program Item Type
 spec-type: build-test-program
 type: spec
diff --git a/spec/spec/build.yml b/spec/spec/build.yml
index d91deb8e..4dce73a0 100644
--- a/spec/spec/build.yml
+++ b/spec/spec/build.yml
@@ -20,7 +20,7 @@ spec-info:
         spec-type: name
     description: |
       This set of attributes specifies a build item.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Build Item Type
 spec-type: build
 type: spec
diff --git a/spec/spec/constraint-role.yml b/spec/spec/constraint-role.yml
index c57cf17f..3ceb60fd 100644
--- a/spec/spec/constraint-role.yml
+++ b/spec/spec/constraint-role.yml
@@ -17,7 +17,7 @@ spec-info:
     description: |
       It defines the constraint role of links.  The link target shall be a
       constraint.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Constraint Link Role
 spec-type: constraint-role
 type: spec
diff --git a/spec/spec/constraint.yml b/spec/spec/constraint.yml
index aa00f51f..07670b74 100644
--- a/spec/spec/constraint.yml
+++ b/spec/spec/constraint.yml
@@ -29,7 +29,7 @@ spec-info:
         spec-type: requirement-text
     description: |
       This set of attributes specifies a constraint.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Constraint Item Type
 spec-type: constraint
 type: spec
diff --git a/spec/spec/enabled-by.yml b/spec/spec/enabled-by.yml
index ec13804f..c88d74e4 100644
--- a/spec/spec/enabled-by.yml
+++ b/spec/spec/enabled-by.yml
@@ -38,7 +38,7 @@ spec-info:
         spec-type: enabled-by-list
     description: |
       Each attribute defines an operator.
-    required-attributes: exactly-one
+    mandatory-attributes: exactly-one
   list:
     description: |
       This list of expressions evaluates to the *logical or* of the evaluation
diff --git a/spec/spec/glossary-group.yml b/spec/spec/glossary-group.yml
index 305d6152..6f8ea05a 100644
--- a/spec/spec/glossary-group.yml
+++ b/spec/spec/glossary-group.yml
@@ -24,7 +24,7 @@ spec-info:
         spec-type: str
     description: |
       This set of attributes specifies a glossary group.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Glossary Group Item Type
 spec-type: glossary-group
 type: spec
diff --git a/spec/spec/glossary-member.yml b/spec/spec/glossary-member.yml
index 7c91beb4..6220f7a9 100644
--- a/spec/spec/glossary-member.yml
+++ b/spec/spec/glossary-member.yml
@@ -16,7 +16,7 @@ spec-info:
     attributes: {}
     description: |
       It defines the glossary membership role of links.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Glossary Membership Link Role
 spec-type: glossary-member
 type: spec
diff --git a/spec/spec/glossary-term.yml b/spec/spec/glossary-term.yml
index c6493fc8..9e6473b9 100644
--- a/spec/spec/glossary-term.yml
+++ b/spec/spec/glossary-term.yml
@@ -24,7 +24,7 @@ spec-info:
         spec-type: str
     description: |
       This set of attributes specifies a glossary term.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Glossary Term Item Type
 spec-type: glossary-term
 type: spec
diff --git a/spec/spec/glossary.yml b/spec/spec/glossary.yml
index d3a9e134..831564b2 100644
--- a/spec/spec/glossary.yml
+++ b/spec/spec/glossary.yml
@@ -20,7 +20,7 @@ spec-info:
         spec-type: name
     description: |
       This set of attributes specifies a glossary item.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Glossary Item Type
 spec-type: glossary
 type: spec
diff --git a/spec/spec/interface-compound.yml b/spec/spec/interface-compound.yml
index f277756a..a1fdc123 100644
--- a/spec/spec/interface-compound.yml
+++ b/spec/spec/interface-compound.yml
@@ -39,7 +39,7 @@ spec-info:
         spec-type: interface-notes
     description: |
       This set of attributes specifies a compound (struct or union).
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Compound Item Type
 spec-type: interface-compound
 type: spec
diff --git a/spec/spec/interface-container.yml b/spec/spec/interface-container.yml
index 9f59b8ec..be98c68e 100644
--- a/spec/spec/interface-container.yml
+++ b/spec/spec/interface-container.yml
@@ -19,7 +19,7 @@ spec-info:
       exactly one link with the ${interface-placement:/spec-name} to an
       ${interface-domain:/spec-name} item.  This link defines the interface
       domain of the container.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Container Item Type
 spec-type: interface-container
 type: spec
diff --git a/spec/spec/interface-define.yml b/spec/spec/interface-define.yml
index a8aefc12..ccd8718f 100644
--- a/spec/spec/interface-define.yml
+++ b/spec/spec/interface-define.yml
@@ -32,7 +32,7 @@ spec-info:
         spec-type: interface-notes
     description: |
       This set of attributes specifies a define.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Define Item Type
 spec-type: interface-define
 type: spec
diff --git a/spec/spec/interface-definition-directive.yml b/spec/spec/interface-definition-directive.yml
index 7112bc52..d5fe46cb 100644
--- a/spec/spec/interface-definition-directive.yml
+++ b/spec/spec/interface-definition-directive.yml
@@ -20,7 +20,7 @@ spec-info:
         spec-type: interface-definition-variant-list
     description: |
       This set of attributes specifies an interface definition directive.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Definition Directive
 spec-type: interface-definition-directive
 type: spec
diff --git a/spec/spec/interface-definition-variant.yml b/spec/spec/interface-definition-variant.yml
index 56baf89f..02276c5e 100644
--- a/spec/spec/interface-definition-variant.yml
+++ b/spec/spec/interface-definition-variant.yml
@@ -21,7 +21,7 @@ spec-info:
         spec-type: interface-enabled-by
     description: |
       This set of attributes specifies an interface definition variant.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Definition Variant
 spec-type: interface-definition-variant
 type: spec
diff --git a/spec/spec/interface-domain.yml b/spec/spec/interface-domain.yml
index 0ea33efa..143e0b8c 100644
--- a/spec/spec/interface-domain.yml
+++ b/spec/spec/interface-domain.yml
@@ -27,7 +27,7 @@ spec-info:
       ${interface-container:/spec-name} and ${interface-header-file:/spec-name}
       are placed into domains through links with the
       ${interface-placement:/spec-name}.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Domain Item Type
 spec-type: interface-domain
 type: spec
diff --git a/spec/spec/interface-enabled-by.yml b/spec/spec/interface-enabled-by.yml
index 8863269b..9c0798ec 100644
--- a/spec/spec/interface-enabled-by.yml
+++ b/spec/spec/interface-enabled-by.yml
@@ -32,7 +32,7 @@ spec-info:
         spec-type: interface-enabled-by-list
     description: |
       Each attribute defines an operator.
-    required-attributes: exactly-one
+    mandatory-attributes: exactly-one
   list:
     description: |
       It defines a *logical or* of the expressions in the list.
diff --git a/spec/spec/interface-enum.yml b/spec/spec/interface-enum.yml
index 38430703..0a7c3e57 100644
--- a/spec/spec/interface-enum.yml
+++ b/spec/spec/interface-enum.yml
@@ -32,7 +32,7 @@ spec-info:
         spec-type: interface-description
     description: |
       This set of attributes specifies an enum.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Enum Item Type
 spec-type: interface-enum
 type: spec
diff --git a/spec/spec/interface-enumerator-role.yml b/spec/spec/interface-enumerator-role.yml
index 7fab2799..1bfa32c9 100644
--- a/spec/spec/interface-enumerator-role.yml
+++ b/spec/spec/interface-enumerator-role.yml
@@ -16,7 +16,7 @@ spec-info:
     attributes: {}
     description: |
       It defines the interface enumerator role of links.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Enumerator Link Role
 spec-type: interface-enumerator-role
 type: spec
diff --git a/spec/spec/interface-enumerator.yml b/spec/spec/interface-enumerator.yml
index 1743ed55..3b7b60b7 100644
--- a/spec/spec/interface-enumerator.yml
+++ b/spec/spec/interface-enumerator.yml
@@ -32,7 +32,7 @@ spec-info:
         spec-type: interface-notes
     description: |
       This set of attributes specifies an enumerator.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Enumerator Item Type
 spec-type: interface-enumerator
 type: spec
diff --git a/spec/spec/interface-forward-declaration.yml b/spec/spec/interface-forward-declaration.yml
index de6e1562..ab180f04 100644
--- a/spec/spec/interface-forward-declaration.yml
+++ b/spec/spec/interface-forward-declaration.yml
@@ -19,7 +19,7 @@ spec-info:
       exactly one link with the ${interface-target:/spec-name} to an
       ${interface-compound:/spec-name} item.  This link defines the type
       declared by the forward declaration.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Forward Declaration Item Type
 spec-type: interface-forward-declaration
 type: spec
diff --git a/spec/spec/interface-function-definition-directive.yml b/spec/spec/interface-function-definition-directive.yml
index d7258990..b7f1f87d 100644
--- a/spec/spec/interface-function-definition-directive.yml
+++ b/spec/spec/interface-function-definition-directive.yml
@@ -20,7 +20,7 @@ spec-info:
         spec-type: interface-function-definition-variant-list
     description: |
       This set of attributes specifies a function definition directive.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Function Definition Directive
 spec-type: interface-function-definition-directive
 type: spec
diff --git a/spec/spec/interface-function-definition-variant.yml b/spec/spec/interface-function-definition-variant.yml
index ab9fdaca..167ed8ff 100644
--- a/spec/spec/interface-function-definition-variant.yml
+++ b/spec/spec/interface-function-definition-variant.yml
@@ -21,7 +21,7 @@ spec-info:
         spec-type: interface-enabled-by
     description: |
       This set of attributes specifies a function definition variant.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Function Definition Variant
 spec-type: interface-function-definition-variant
 type: spec
diff --git a/spec/spec/interface-function-definition.yml b/spec/spec/interface-function-definition.yml
index 1d05127d..c4297969 100644
--- a/spec/spec/interface-function-definition.yml
+++ b/spec/spec/interface-function-definition.yml
@@ -30,7 +30,7 @@ spec-info:
         spec-type: str
     description: |
       This set of attributes specifies a function definition.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Function Definition
 spec-type: interface-function-definition
 type: spec
diff --git a/spec/spec/interface-function.yml b/spec/spec/interface-function.yml
index 21e7e846..f1916752 100644
--- a/spec/spec/interface-function.yml
+++ b/spec/spec/interface-function.yml
@@ -38,7 +38,7 @@ spec-info:
         spec-type: interface-return-directive
     description: |
       This set of attributes specifies a function.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Function Item Type
 spec-type: interface-function
 type: spec
diff --git a/spec/spec/interface-group.yml b/spec/spec/interface-group.yml
index ee6c3c2c..8710d42a 100644
--- a/spec/spec/interface-group.yml
+++ b/spec/spec/interface-group.yml
@@ -29,7 +29,7 @@ spec-info:
         spec-type: str
     description: |
       This set of attributes specifies an interface group.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Group Item Type
 spec-type: interface-group
 type: spec
diff --git a/spec/spec/interface-header-file.yml b/spec/spec/interface-header-file.yml
index f7965150..d6b10e89 100644
--- a/spec/spec/interface-header-file.yml
+++ b/spec/spec/interface-header-file.yml
@@ -29,7 +29,7 @@ spec-info:
       exactly one link with the ${interface-placement:/spec-name} to an
       ${interface-domain:/spec-name} item.  This link defines the interface
       domain of the header file.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Header File Item Type
 spec-type: interface-header-file
 type: spec
diff --git a/spec/spec/interface-include.yml b/spec/spec/interface-include.yml
index 30524426..13fc0040 100644
--- a/spec/spec/interface-include.yml
+++ b/spec/spec/interface-include.yml
@@ -23,7 +23,7 @@ spec-info:
       It defines the interface include role of links and is used to indicate
       that an interface container includes another interface container.  For
       example, one header file includes another header file.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Include Link Role
 spec-type: interface-include
 type: spec
diff --git a/spec/spec/interface-ingroup.yml b/spec/spec/interface-ingroup.yml
index 98b5e09c..f55e8ab4 100644
--- a/spec/spec/interface-ingroup.yml
+++ b/spec/spec/interface-ingroup.yml
@@ -16,7 +16,7 @@ spec-info:
     attributes: {}
     description: |
       It defines the interface group membership role of links.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Group Membership Link Role
 spec-type: interface-ingroup
 type: spec
diff --git a/spec/spec/interface-macro.yml b/spec/spec/interface-macro.yml
index d67624a2..69bf9998 100644
--- a/spec/spec/interface-macro.yml
+++ b/spec/spec/interface-macro.yml
@@ -38,7 +38,7 @@ spec-info:
         spec-type: interface-return-directive
     description: |
       This set of attributes specifies a macro.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Macro Item Type
 spec-type: interface-macro
 type: spec
diff --git a/spec/spec/interface-member-compound.yml b/spec/spec/interface-member-compound.yml
index 1322f22d..aff80d65 100644
--- a/spec/spec/interface-member-compound.yml
+++ b/spec/spec/interface-member-compound.yml
@@ -23,7 +23,7 @@ spec-info:
         spec-type: interface-member-definition-directive-list
     description: |
       This set of attributes specifies an interface compound member compound.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Compound Member Compound
 spec-type: interface-member-compound
 type: spec
diff --git a/spec/spec/interface-member-declaration.yml b/spec/spec/interface-member-declaration.yml
index 763e5f08..c119b765 100644
--- a/spec/spec/interface-member-declaration.yml
+++ b/spec/spec/interface-member-declaration.yml
@@ -23,7 +23,7 @@ spec-info:
     description: |
       This set of attributes specifies an interface compound member
       declaration.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Compound Member Declaration
 spec-type: interface-member-declaration
 type: spec
diff --git a/spec/spec/interface-member-definition-directive.yml b/spec/spec/interface-member-definition-directive.yml
index 8193d0ee..1e17e577 100644
--- a/spec/spec/interface-member-definition-directive.yml
+++ b/spec/spec/interface-member-definition-directive.yml
@@ -21,7 +21,7 @@ spec-info:
     description: |
       This set of attributes specifies an interface compound member definition
       directive.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Compound Member Definition Directive
 spec-type: interface-member-definition-directive
 type: spec
diff --git a/spec/spec/interface-member-definition-variant.yml b/spec/spec/interface-member-definition-variant.yml
index 4f215656..3cd15a58 100644
--- a/spec/spec/interface-member-definition-variant.yml
+++ b/spec/spec/interface-member-definition-variant.yml
@@ -22,7 +22,7 @@ spec-info:
     description: |
       This set of attributes specifies an interface compound member definition
       variant.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Compound Member Definition Variant
 spec-type: interface-member-definition-variant
 type: spec
diff --git a/spec/spec/interface-member-definition.yml b/spec/spec/interface-member-definition.yml
index 5833cec0..2f8be1fe 100644
--- a/spec/spec/interface-member-definition.yml
+++ b/spec/spec/interface-member-definition.yml
@@ -26,7 +26,7 @@ spec-info:
         spec-type: str
     description: |
       This set of attributes specifies an interface compound member definition.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Compound Member Definition
 spec-type: interface-member-definition
 type: spec
diff --git a/spec/spec/interface-param.yml b/spec/spec/interface-param.yml
index f0fada59..cb822665 100644
--- a/spec/spec/interface-param.yml
+++ b/spec/spec/interface-param.yml
@@ -22,7 +22,7 @@ spec-info:
         spec-type: str
     description: |
       This set of attributes specifies an interface parameter.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Parameter
 spec-type: interface-param
 type: spec
diff --git a/spec/spec/interface-placement.yml b/spec/spec/interface-placement.yml
index f1c72fb5..b8c6f6f7 100644
--- a/spec/spec/interface-placement.yml
+++ b/spec/spec/interface-placement.yml
@@ -18,7 +18,7 @@ spec-info:
       It defines the interface placement role of links.  It is used to indicate
       that an interface definition is placed into an interface container, for
       example a header file.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Placement Link Role
 spec-type: interface-placement
 type: spec
diff --git a/spec/spec/interface-return-directive.yml b/spec/spec/interface-return-directive.yml
index 66182f6a..5fe3f6f7 100644
--- a/spec/spec/interface-return-directive.yml
+++ b/spec/spec/interface-return-directive.yml
@@ -19,7 +19,7 @@ spec-info:
         spec-type: interface-return-value-list
     description: |
       This set of attributes specifies an interface return.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Return Directive
 spec-type: interface-return-directive
 type: spec
diff --git a/spec/spec/interface-return-value.yml b/spec/spec/interface-return-value.yml
index 800917b3..c479c987 100644
--- a/spec/spec/interface-return-value.yml
+++ b/spec/spec/interface-return-value.yml
@@ -19,7 +19,7 @@ spec-info:
         spec-type: bool-or-int-or-str
     description: |
       This set of attributes specifies an interface return value.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Return Value
 spec-type: interface-return-value
 type: spec
diff --git a/spec/spec/interface-target.yml b/spec/spec/interface-target.yml
index 4fc4db68..94cae816 100644
--- a/spec/spec/interface-target.yml
+++ b/spec/spec/interface-target.yml
@@ -17,7 +17,7 @@ spec-info:
     description: |
       It defines the interface target role of links.  It is used for interface
       forward declarations.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Target Link Role
 spec-type: interface-target
 type: spec
diff --git a/spec/spec/interface-typedef.yml b/spec/spec/interface-typedef.yml
index 28218330..c066a22b 100644
--- a/spec/spec/interface-typedef.yml
+++ b/spec/spec/interface-typedef.yml
@@ -32,7 +32,7 @@ spec-info:
         spec-type: interface-notes
     description: |
       This set of attributes specifies a typedef.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Typedef Item Type
 spec-type: interface-typedef
 type: spec
diff --git a/spec/spec/interface-unspecified.yml b/spec/spec/interface-unspecified.yml
index 7d82ab54..41d5482d 100644
--- a/spec/spec/interface-unspecified.yml
+++ b/spec/spec/interface-unspecified.yml
@@ -20,7 +20,7 @@ spec-info:
         spec-type: str
     description: |
       This set of attributes specifies an unspecified interface.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Unspecified Item Type
 spec-type: interface-unspecified
 type: spec
diff --git a/spec/spec/interface-variable.yml b/spec/spec/interface-variable.yml
index b727327f..c57da662 100644
--- a/spec/spec/interface-variable.yml
+++ b/spec/spec/interface-variable.yml
@@ -32,7 +32,7 @@ spec-info:
         spec-type: interface-notes
     description: |
       This set of attributes specifies a variable.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Variable Item Type
 spec-type: interface-variable
 type: spec
diff --git a/spec/spec/interface.yml b/spec/spec/interface.yml
index d975a949..e8bfed2c 100644
--- a/spec/spec/interface.yml
+++ b/spec/spec/interface.yml
@@ -25,7 +25,7 @@ spec-info:
       ${interface-domain:/spec-name} items to specify interface domains, for
       example the ${/glossary/api:/term}, C language, compiler, interfaces to
       the implementation, and the hardware.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Interface Item Type
 spec-type: interface
 type: spec
diff --git a/spec/spec/link.yml b/spec/spec/link.yml
index d8378064..3c7fb5de 100644
--- a/spec/spec/link.yml
+++ b/spec/spec/link.yml
@@ -22,7 +22,7 @@ spec-info:
       This set of attributes specifies a link from one specification item to
       another specification item.  The links in a list are ordered.  The first
       link in the list is processed first.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Link
 spec-type: link
 type: spec
diff --git a/spec/spec/requirement-functional.yml b/spec/spec/requirement-functional.yml
index 46ed7cd0..503909dc 100644
--- a/spec/spec/requirement-functional.yml
+++ b/spec/spec/requirement-functional.yml
@@ -20,7 +20,7 @@ spec-info:
         spec-type: requirement-functional-type
     description: |
       This set of attributes specifies a functional requirement.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Functional Requirement Item Type
 spec-type: requirement-functional
 type: spec
diff --git a/spec/spec/requirement-non-functional.yml b/spec/spec/requirement-non-functional.yml
index 410446bf..11bd5495 100644
--- a/spec/spec/requirement-non-functional.yml
+++ b/spec/spec/requirement-non-functional.yml
@@ -20,7 +20,7 @@ spec-info:
         spec-type: requirement-non-functional-type
     description: |
       This set of attributes specifies a non-functional requirement.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Non-Functional Requirement Item Type
 spec-type: requirement-non-functional
 type: spec
diff --git a/spec/spec/requirement-reference.yml b/spec/spec/requirement-reference.yml
index 12a06a3d..599963a1 100644
--- a/spec/spec/requirement-reference.yml
+++ b/spec/spec/requirement-reference.yml
@@ -20,7 +20,7 @@ spec-info:
         spec-type: requirement-reference-type
     description: |
       This set of attributes specifies a requirement reference.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Requirement Reference
 spec-type: requirement-reference
 type: spec
diff --git a/spec/spec/requirement-refinement.yml b/spec/spec/requirement-refinement.yml
index 7918bc8a..f5dc5d45 100644
--- a/spec/spec/requirement-refinement.yml
+++ b/spec/spec/requirement-refinement.yml
@@ -16,7 +16,7 @@ spec-info:
     attributes: {}
     description: |
       It defines the requirement refinement role of links.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Requirement Refinement Link Role
 spec-type: requirement-refinement
 type: spec
diff --git a/spec/spec/requirement-validation-role.yml b/spec/spec/requirement-validation-role.yml
index ed948838..a2460ba4 100644
--- a/spec/spec/requirement-validation-role.yml
+++ b/spec/spec/requirement-validation-role.yml
@@ -16,7 +16,7 @@ spec-info:
     attributes: {}
     description: |
       It defines the requirement validation role of links.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Requirement Validation Link Role
 spec-type: requirement-validation-role
 type: spec
diff --git a/spec/spec/requirement-validation.yml b/spec/spec/requirement-validation.yml
index 4b1bbf42..dadba7ad 100644
--- a/spec/spec/requirement-validation.yml
+++ b/spec/spec/requirement-validation.yml
@@ -37,7 +37,7 @@ spec-info:
       This set of attributes provides a requirement validation evidence.  The
       item shall have exactly one link to the validated requirement with the
       ${requirement-validation-role:/spec-name}.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Requirement Validation Item Type
 spec-type: requirement-validation
 type: spec
diff --git a/spec/spec/requirement.yml b/spec/spec/requirement.yml
index e241c001..3018b8c7 100644
--- a/spec/spec/requirement.yml
+++ b/spec/spec/requirement.yml
@@ -44,7 +44,7 @@ spec-info:
         spec-type: requirement-text
     description: |
       This set of attributes specifies a requirement.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Requirement Item Type
 spec-type: requirement
 type: spec
diff --git a/spec/spec/root.yml b/spec/spec/root.yml
index b819dddf..58d65280 100644
--- a/spec/spec/root.yml
+++ b/spec/spec/root.yml
@@ -45,7 +45,7 @@ spec-info:
       use in tools.
 
       This is the root specification item type.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Root Item Type
 spec-type: root
 type: spec
diff --git a/spec/spec/spec-assert-float.yml b/spec/spec/spec-assert-float.yml
index bad0bae5..fd6f2564 100644
--- a/spec/spec/spec-assert-float.yml
+++ b/spec/spec/spec-assert-float.yml
@@ -60,7 +60,7 @@ spec-info:
         spec-type: spec-assert-float-list
     description: |
       Each attribute defines an operator.
-    required-attributes: exactly-one
+    mandatory-attributes: exactly-one
   list:
     description: |
       This list of expressions evaluates to the *logical or* of the evaluation
diff --git a/spec/spec/spec-assert-int.yml b/spec/spec/spec-assert-int.yml
index de96df11..ec903b80 100644
--- a/spec/spec/spec-assert-int.yml
+++ b/spec/spec/spec-assert-int.yml
@@ -59,7 +59,7 @@ spec-info:
         spec-type: spec-assert-int-list
     description: |
       Each attribute defines an operator.
-    required-attributes: exactly-one
+    mandatory-attributes: exactly-one
   list:
     description: |
       This list of expressions evaluates to the *logical or* of the evaluation
diff --git a/spec/spec/spec-assert-str.yml b/spec/spec/spec-assert-str.yml
index 0ebd4779..915da6ed 100644
--- a/spec/spec/spec-assert-str.yml
+++ b/spec/spec/spec-assert-str.yml
@@ -83,7 +83,7 @@ spec-info:
         spec-type: none
     description: |
       Each attribute defines an operator.
-    required-attributes: exactly-one
+    mandatory-attributes: exactly-one
   list:
     description: |
       This list of expressions evaluates to the *logical or* of the evaluation
diff --git a/spec/spec/spec-attribute-value.yml b/spec/spec/spec-attribute-value.yml
index 3143ac08..d44e2256 100644
--- a/spec/spec/spec-attribute-value.yml
+++ b/spec/spec/spec-attribute-value.yml
@@ -20,7 +20,7 @@ spec-info:
         spec-type: name
     description: |
       This set of attributes specifies an attribute value.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Specification Attribute Value
 spec-type: spec-attribute-value
 type: spec
diff --git a/spec/spec/spec-attributes.yml b/spec/spec/spec-attributes.yml
index e32b4139..4d4f1686 100644
--- a/spec/spec/spec-attributes.yml
+++ b/spec/spec/spec-attributes.yml
@@ -15,7 +15,7 @@ spec-info:
       description: |
         The generic attributes specify an attribute set.
       spec-type: spec-attribute-value
-    required-attributes: none
+    mandatory-attributes: none
 spec-name: Specification Attribute
 spec-type: spec-attributes
 type: spec
diff --git a/spec/spec/spec-bool.yml b/spec/spec/spec-bool.yml
index 2f45d243..e23f3b1f 100644
--- a/spec/spec/spec-bool.yml
+++ b/spec/spec/spec-bool.yml
@@ -26,7 +26,7 @@ spec-info:
         spec-type: optional-str
     description: |
       This attribute set specifies a boolean value.
-    required-attributes:
+    mandatory-attributes:
     - description
 spec-name: Specification Boolean Value
 spec-type: spec-bool
diff --git a/spec/spec/spec-dict.yml b/spec/spec/spec-dict.yml
index a3066f7a..d917c52e 100644
--- a/spec/spec/spec-dict.yml
+++ b/spec/spec/spec-dict.yml
@@ -12,8 +12,7 @@ spec-info:
     attributes:
       attributes:
         description: |
-          It shall be the specification of the set of explicitly defined
-          attributes.
+          It shall be the specification of the set of explicit attributes.
         spec-type: spec-attributes
       description:
         description: |
@@ -24,16 +23,16 @@ spec-info:
           It shall be the specification of the generic attributes of the
           attribute set.
         spec-type: spec-generic-attributes
-      required-attributes:
+      mandatory-attributes:
         description: |
-          It shall be the set of required attributes of the attribute set.
-        spec-type: spec-required-attributes
+          It shall be the set of mandatory attributes of the attribute set.
+        spec-type: spec-mandatory-attributes
     description: |
       This set of attributes specifies a set of attributes.
-    required-attributes:
+    mandatory-attributes:
     - attributes
     - description
-    - required-attributes
+    - mandatory-attributes
 spec-name: Specification Attribute Set
 spec-type: spec-dict
 type: spec
diff --git a/spec/spec/spec-float.yml b/spec/spec/spec-float.yml
index 1fe07b2e..1f831eb8 100644
--- a/spec/spec/spec-float.yml
+++ b/spec/spec/spec-float.yml
@@ -23,7 +23,7 @@ spec-info:
         spec-type: optional-str
     description: |
       This set of attributes specifies a floating-point value.
-    required-attributes:
+    mandatory-attributes:
     - description
 spec-name: Specification Floating-Point Value
 spec-type: spec-float
diff --git a/spec/spec/spec-generic-attributes.yml b/spec/spec/spec-generic-attributes.yml
index 50765a48..50e89bc8 100644
--- a/spec/spec/spec-generic-attributes.yml
+++ b/spec/spec/spec-generic-attributes.yml
@@ -22,7 +22,7 @@ spec-info:
       This set of attributes specifies generic attributes.  Generic attributes
       are attributes which are not explicitly defined.  They are restricted to
       a uniform attribute value type.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Specification Generic Attributes
 spec-type: spec-generic-attributes
 type: spec
diff --git a/spec/spec/spec-info.yml b/spec/spec/spec-info.yml
index e6ef4fa8..5bdbeee0 100644
--- a/spec/spec/spec-info.yml
+++ b/spec/spec/spec-info.yml
@@ -40,7 +40,7 @@ spec-info:
         spec-type: spec-str
     description: |
       This set of attributes specifies attribute values.
-    required-attributes: at-least-one
+    mandatory-attributes: at-least-one
 spec-name: Specification Information
 spec-type: spec-info
 type: spec
diff --git a/spec/spec/spec-int.yml b/spec/spec/spec-int.yml
index de158a89..080a3a9d 100644
--- a/spec/spec/spec-int.yml
+++ b/spec/spec/spec-int.yml
@@ -23,7 +23,7 @@ spec-info:
         spec-type: optional-str
     description: |
       This set of attributes specifies an integer value.
-    required-attributes:
+    mandatory-attributes:
     - description
 spec-name: Specification Integer Value
 spec-type: spec-int
diff --git a/spec/spec/spec-list.yml b/spec/spec/spec-list.yml
index 28ea4b89..b8f87807 100644
--- a/spec/spec/spec-list.yml
+++ b/spec/spec/spec-list.yml
@@ -20,7 +20,7 @@ spec-info:
         spec-type: name
     description: |
       This set of attributes specifies a list of attributes or values.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Specification List
 spec-type: spec-list
 type: spec
diff --git a/spec/spec/spec-required-attributes.yml b/spec/spec/spec-mandatory-attributes.yml
index f2a6692b..700de958 100644
--- a/spec/spec/spec-required-attributes.yml
+++ b/spec/spec/spec-mandatory-attributes.yml
@@ -6,13 +6,12 @@ links:
 - role: spec-member
   uid: root
 spec-description: |
-  This attribute value defines which of the explicitly defined attributes are
-  required.
+  It defines which explicit attributes are mandatory.
 spec-example: null
 spec-info:
   list:
     description: |
-      This list defines the required attributes through their keys.
+      The list defines the mandatory attributes through their key names.
     spec-type: name
   str:
     assert:
@@ -23,8 +22,9 @@ spec-info:
       - exactly-one
       - none
     description: |
-      This string defines the how many explicitly defined attributes are
-      required.
-spec-name: Specification Required Attributes
-spec-type: spec-required-attributes
+      It defines how many explicit attributes are mandatory.  If `none` is
+      used, then none of the explicit attributes is mandatory, they are all
+      optional.
+spec-name: Specification Mandatory Attributes
+spec-type: spec-mandatory-attributes
 type: spec
diff --git a/spec/spec/spec-member.yml b/spec/spec/spec-member.yml
index 60f68a11..790500ef 100644
--- a/spec/spec/spec-member.yml
+++ b/spec/spec/spec-member.yml
@@ -16,7 +16,7 @@ spec-info:
     attributes: {}
     description: |
       It defines the specification membership role of links.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Specification Member Link Role
 spec-type: spec-member
 type: spec
diff --git a/spec/spec/spec-refinement.yml b/spec/spec/spec-refinement.yml
index ec22d50d..8fd16da1 100644
--- a/spec/spec/spec-refinement.yml
+++ b/spec/spec/spec-refinement.yml
@@ -26,7 +26,7 @@ spec-info:
         spec-type: name
     description: |
       It defines the specification refinement role of links.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Specification Refinement Link Role
 spec-type: spec-refinement
 type: spec
diff --git a/spec/spec/spec-str.yml b/spec/spec/spec-str.yml
index c0ed378e..f83dae5e 100644
--- a/spec/spec/spec-str.yml
+++ b/spec/spec/spec-str.yml
@@ -22,7 +22,7 @@ spec-info:
         spec-type: optional-str
     description: |
       This set of attributes specifies a string.
-    required-attributes:
+    mandatory-attributes:
     - description
 spec-name: Specification String Value
 spec-type: spec-str
diff --git a/spec/spec/spec.yml b/spec/spec/spec.yml
index 8a752f4a..e67e920e 100644
--- a/spec/spec/spec.yml
+++ b/spec/spec/spec.yml
@@ -37,7 +37,7 @@ spec-example: |
           spec-type: int
       description: |
         This set of attributes specifies an example.
-      required-attributes: all
+      mandatory-attributes: all
   spec-name: Example Item Type
   spec-type: spec
   type: spec
@@ -66,7 +66,7 @@ spec-info:
         spec-type: name
     description: |
       This set of attributes specifies specification types.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Specification Item Type
 spec-type: spec
 type: spec
diff --git a/spec/spec/test-case-action.yml b/spec/spec/test-case-action.yml
index 2dcedb61..46c3866d 100644
--- a/spec/spec/test-case-action.yml
+++ b/spec/spec/test-case-action.yml
@@ -26,7 +26,7 @@ spec-info:
         spec-type: links
     description: |
       This set of attributes specifies a test case action.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Test Case Action
 spec-type: test-case-action
 type: spec
diff --git a/spec/spec/test-case-check.yml b/spec/spec/test-case-check.yml
index 47b4d912..ebe8c47b 100644
--- a/spec/spec/test-case-check.yml
+++ b/spec/spec/test-case-check.yml
@@ -23,7 +23,7 @@ spec-info:
         spec-type: links
     description: |
       This set of attributes specifies a test case check.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Test Case Check
 spec-type: test-case-check
 type: spec
diff --git a/spec/spec/test-case.yml b/spec/spec/test-case.yml
index 297d7108..00773055 100644
--- a/spec/spec/test-case.yml
+++ b/spec/spec/test-case.yml
@@ -66,7 +66,7 @@ spec-info:
         spec-type: str
     description: |
       This set of attributes specifies a test case.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Test Case Item Type
 spec-type: test-case
 type: spec
diff --git a/spec/spec/test-platform.yml b/spec/spec/test-platform.yml
index dbcc48b5..c2ede20b 100644
--- a/spec/spec/test-platform.yml
+++ b/spec/spec/test-platform.yml
@@ -30,7 +30,7 @@ spec-info:
            This item type is work in progress.
 
       This set of attributes specifies a test platform.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Test Platform Item Type
 spec-type: test-platform
 type: spec
diff --git a/spec/spec/test-procedure.yml b/spec/spec/test-procedure.yml
index f5e381c5..c3675188 100644
--- a/spec/spec/test-procedure.yml
+++ b/spec/spec/test-procedure.yml
@@ -34,7 +34,7 @@ spec-info:
            This item type is work in progress.
 
       This set of attributes specifies a test procedure.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Test Procedure Item Type
 spec-type: test-procedure
 type: spec
diff --git a/spec/spec/test-suite.yml b/spec/spec/test-suite.yml
index 517f5428..aed3a55b 100644
--- a/spec/spec/test-suite.yml
+++ b/spec/spec/test-suite.yml
@@ -44,7 +44,7 @@ spec-info:
         spec-type: str
     description: |
       This set of attributes specifies a test suite.
-    required-attributes: all
+    mandatory-attributes: all
 spec-name: Test Suite Item Type
 spec-type: test-suite
 type: spec