added some comments

diff --git a/perl/watchdbg b/perl/watchdbg
index c1d6b172beb11a09f63e2c288c7596f152f770f4..dec397091dba07d826dbc7e7eb887c8a0a98d0ca 100755 (executable)
--- a/perl/watchdbg
+++ b/perl/watchdbg
@@ -6,6 +6,7 @@
 # examples:-
 # 
 #   watchdbg g1tlh       # watch everything g1tlh does
+#   watchdbg 2 PCPROT       # watch all PCPROT messages + up to 2 lines before
 #   watchdbg gb7baa gb7djk   # watch the conversation between BAA and DJK 
 #