1 files changed, 6 insertions, 2 deletions
diff --git a/uxd.c b/uxd.c
index 6ea3897..183c422 100644
--- a/uxd.c
+++ b/uxd.c
@@ -46,8 +46,11 @@ extern int optind;
 #define BUFSIZ 4096
 #endif
 
+/* environment variables. */
 #define NO_COLOR "NO_COLOR"
 #define ENV_OPTS "UXD_OPTS"
+
+/* maximum number of arguments, including environment and argv. */
 #define MAX_ARGS 64
 
 /* ANSI colors */
@@ -68,7 +71,8 @@ int special_color = PURPLE;
 /* toggles between 0 and 1 for each normal character */
 int cur_normal_hilite = 0;
 
-/* highlight types */
+/* highlight types. HL_NORM_INV is only used for the hex bytes, not
+   the human-readable right column.  */
 #define HL_NORMAL 0
 #define HL_NORM_INV 1
 #define HL_SPECIAL 2
@@ -347,7 +351,7 @@ void print_line(void) {
 	dump_column = 0;
 }
 
-void next_normal_hilite() {
+void next_normal_hilite(void) {
 	if(alternate_colors)
 		cur_normal_hilite = !cur_normal_hilite;
 }