1 files changed, 19 insertions, 0 deletions
diff --git a/src/cmap.cxx b/src/cmap.cxx
index cc644dcb5..0494f0e22 100644
--- a/src/cmap.cxx
+++ b/src/cmap.cxx
@@ -159,11 +159,30 @@ int main() {
 	i++;
       }
 
+	// write comment into 'cmap.h' so the reader knows what it is good for
+
+	printf("//\n");
+	printf("// \"$%s$\"\n","Id"); // avoid expansion of Id
+	printf("//\n");
+	printf("// DO NOT EDIT THIS FILE !\n");
+	printf("//\n");
+	printf("// This file must be created with \"src/cmap.cxx\".\n");
+	printf("//\n");
+
+	// write color map values
+
   for (i=0; i<256; i++) {
     printf("\t0x%02x%02x%02x00",cmap[i][0],cmap[i][1],cmap[i][2]);
     if (i < 255) printf(",\n");
   }
   printf("\n");
+
+	// write final comment
+
+	printf("//\n");
+	printf("// End of \"$%s$\".\n","Id"); // avoid expansion of Id
+	printf("//\n");
+
   return 0;
 }