ENH: clean up docs some

1 files changed, 1 insertions, 1 deletions

diff --git a/Source/cmAddDefinitionsCommand.h b/Source/cmAddDefinitionsCommand.h
index 1d7161b93a..2dfcf419ef 100644
--- a/Source/cmAddDefinitionsCommand.h
+++ b/Source/cmAddDefinitionsCommand.h
@@ -69,7 +69,7 @@ public:
     {
     return
       "ADD_DEFINITIONS(-DFOO -DBAR ...)\n"
-      "Add -D define flags to command line for  environments.";
+      "Add flags to command line of C and C++ compiles.  This command can be used to add any flag to a compile line, but the -D flag is accepted most C/C++ compilers.  Other flags may not be as portable.";
     }
   
   cmTypeMacro(cmAddDefinitionsCommand, cmCommand);