RCS is a prerequisite.

diff --git a/INSTALL b/INSTALL
index b9d47143ea699c7873748f9a2c004623067986ff..5182fc364bfa7c6ebc49a66d444954854aea2344 100644 (file)
--- a/INSTALL
+++ b/INSTALL
@@ -1,6 +1,7 @@
 = Installing SRC =
 
-Put src somewhere on your $PATH.  That's all there is to it.
+Have RCS installed on your system. Put src somewhere on your $PATH.  
+That's all there is to it.
 
 There's a 'make install' production you can use that also installs the
 manual page.  It will require root permissions.