diff --git a/Csystem/README.md b/Csystem/README.md
index bab1b6e..a5e6ac3 100644
--- a/Csystem/README.md
+++ b/Csystem/README.md
@@ -1,13 +1,23 @@
 # Introduction
 
-This folder contains files and instructions to install the Telefile/Andrews University C compiler
-and run time system.  
+This folder contains files and instructions to install and test the Telefile/Andrews University C compiler dated July, 1986. 
+
+The Telefile -11 document includes this:
+
+TELEFILE C IS FULLY COMPATIBLE WITH THE VERSION THAT
+IS AVAILABLE UNDER UNIX SYSTEM V FROM ATT.  TELEFILE C
+SHOULD BE A SUPERSET OF THE VERSIONS THAT MAY BE FOUND
+ON MANY MINI AND MICRO COMPUTERS.  THIS COMPILER IS
+LICENSED FROM ATT.
+
+There is no source code available for the compiler.  I found several external DEF labels in the
+compiler ROMs that match external symbols in a
+SysVR2 package from an internet archive.
 
 # Files
 
 File | Description
 ----|----
-30b0.tap /| Files to use to build the compiler and library.  This includes BO, JCL and
-documentation.
-
-81b0.tap /| Files for the .CLIB account including :LIB.
+30b0.tap | FRES files to build and test the compiler and library.  This includes BO, JCL and documentation.
+81b0-2.tap | FRES files for the .CLIB account including :LIB.
+Installation | Instructions to install the system on F00 CP-V.