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@@ -5,6 +5,8 @@ There should also be support for ITS, but it won't build as is.
 
 `<mdl.comp>` contains a TOPS-20 Muddle compiler from around 1982.
 
+`<mdl.documentation>` documents the 1979 ITS Muddle 54.
+
 `<sys.unsupported>` contains a few progams in the Muddle ecosystem.
 
 `MUDDLE` contains Muddle for ITS, from around 1973.