improve docu of ir_visibility_external

diff --git a/include/libfirm/typerep.h b/include/libfirm/typerep.h
index 8174351..e2bc6b2 100644 (file)
--- a/include/libfirm/typerep.h
+++ b/include/libfirm/typerep.h
@@ -93,8 +93,9 @@ typedef enum {
        /**
         * The entity is visible across compilation units. It might have an
         * initializer/graph.
-        * Note that variables with visibility_external but not initializer are
-        * not "uninitialized" but considered to be in another compilation unit.
+        * Note that entities with visibility_external without initializer are
+        * assumed to be defined in another compilation unit (not like C variables
+        * which are considered 'uninitialized' in this case).
         */
        ir_visibility_external,
        /**