draft new more sophisticated usage, before we abandon it

diff --git a/detpic/crashread b/detpic/crashread
index 445168b63a4aad235a8f8be4aa9b070e9153fa3c..e0ce86a8a9d7c21a948a74541876775a011ace6b 100755 (executable)
--- a/detpic/crashread
+++ b/detpic/crashread
@@ -1,4 +1,10 @@
 #!/usr/bin/tclsh8.4
+#
+# usages:
+#   ./crashread -p<device> -T <something>.map
+#        spits <something>.crat to stdout
+#   ./crashread [-i<picno>] [-S<serialport>] <something>.crat
+#        spits <something>.crat to stdout
 
 if {[llength $argv] != 3} { error "need args: serial port, map file, picno" }
 set port [lindex $argv 0]