diff --git a/sys/ansi.h b/sys/ansi.h
index 4e4d244..0f37a8e 100644
--- a/sys/ansi.h
+++ b/sys/ansi.h
@@ -7,11 +7,15 @@
 #ifndef _ANSI_
 #define _ANSI_
 
+// the first 5 are also supported by VT100
 #define ANSI_BOLD "[1m"
 #define ANSI_UNDERL "[4m"
 #define ANSI_BLINK "[5m"
 #define ANSI_INVERS "[7m"
 
+#define ANSI_NORMAL "[0m"
+
+// From here on only supported by ANSI
 #define ANSI_BLACK "[30m"
 #define ANSI_RED "[31m"
 #define ANSI_GREEN "[32m"
@@ -30,6 +34,4 @@
 #define ANSI_BG_CYAN "[46m"
 #define ANSI_BG_WHITE "[47m"
 
-#define ANSI_NORMAL "[0m"
-
 #endif