diff --git a/thebookofcolors b/thebookofcolors
index 13e79f1..5e44e3c 100755
--- a/thebookofcolors
+++ b/thebookofcolors
@@ -410,6 +410,8 @@ section_table_of_all_sgr_commands() {
 		printf " "
 	done
 	newline
+
+	printf "Note that not all capabilities will necessarily be shown; codes 38 and 48, for example, require extra parameters in order to do anything (to select from the 8-bit or 24-bit color palette).\n"
 }
 
 section_credits() {