diff --git a/build/org.eclipse.cdt.managedbuilder.core/schema/buildProperties.exsd b/build/org.eclipse.cdt.managedbuilder.core/schema/buildProperties.exsd
index b21a6e00848..0b3fcb9233b 100644
--- a/build/org.eclipse.cdt.managedbuilder.core/schema/buildProperties.exsd
+++ b/build/org.eclipse.cdt.managedbuilder.core/schema/buildProperties.exsd
@@ -11,7 +11,17 @@
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+ The build properties extension point is used to specify the property types and their values to be used with the tool definitions. The primary use if the build properties for now is option anablement/adjustment expressions.
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@@ -39,6 +49,62 @@
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+ specifies the property type
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+ the property type id
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+ translatable property type name
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+ property value id
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+ translatable property value name
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+ the property type id this value belongs to
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