document -a option

1 files changed, 1 insertions, 0 deletions

diff --git a/usage.c b/usage.c
index e547068..5831514 100644
--- a/usage.c
+++ b/usage.c
@@ -1,6 +1,7 @@
 char *usage_opts[] = {
 	"  --: no more options.",
 	"  -1: don't alternate colors.",
+	"  -a: don't dump ASCII-only lines.",
 	"  -b: bold color output.",
 	"  -c nnnnn: colors (1 to 5 digits, 0 to 7).",
 	"  -d data: dump this data instead of a file.",