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-rw-r--r--lib/compiler/doc/src/compile.xml3
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/compiler/doc/src/compile.xml b/lib/compiler/doc/src/compile.xml
index 84e9922847..b577e5ca4f 100644
--- a/lib/compiler/doc/src/compile.xml
+++ b/lib/compiler/doc/src/compile.xml
@@ -333,7 +333,8 @@ module.beam: module.erl \
<tag><c>{d,Macro,Value}</c></tag>
<item>
<p>Defines a macro <c>Macro</c> to have the value
- <c>Value</c>. The default is <c>true</c>.</p>
+ <c>Value</c>. <c>Macro</c> is of type atom, and <c>Value</c> can be any term.
+ The default <c>Value</c> is <c>true</c>.</p>
</item>
<tag><c>{parse_transform,Module}</c></tag>