diff --git a/usr.bin/tr/tests/dotests b/usr.bin/tr/tests/dotests
index 9f9f021..d619228 100644
--- a/usr.bin/tr/tests/dotests
+++ b/usr.bin/tr/tests/dotests
@@ -1,6 +1,18 @@
 # Tests for tr command; invoked by command file "fulltests"
 #   Written by Dave Tribby (August 1997)
-#   $Id: dotests,v 1.3 1998/03/08 17:49:44 gdr-ftp Exp $
+#   $Id: dotests,v 1.4 1998/03/11 17:12:57 tribby Exp $
+
+### NOTE: The "file1" text files should be included in the test archive:
+###   file1.UPPER    file1.Ul     file1.mixed  file1.noalpha  file1.nolower 
+###   file1.novowel  file1.onlyup 
+### Some "file2" and "file3" files use control control characters and
+### must be generated by the program genbin. The easiest way to create
+### genbin and the following files:
+###   file2.bin1     file2.bin2   file2.bin3 
+###   file3.alnum    file3.alpha  file3.blank  file3.cntrl    file3.digit
+###   file3.full     file3.graph  file3.lower  file3.print    file3.punct
+###   file3.space    file3.upper  file3.xdigit 
+### is to execute dmake with no additional parameters.
 
 # Location of the tr command to be tested
 set testcmd="/obj/gno/usr.bin/tr/tr"