Docmentation for EMACS CLU mode; autoload.

Source: http://pdp10.nocrew.org/its/dl/info/eclu.info.Z
It's identical to <INFO>ECLU.INFO.24 on ToTS tape 9003789.

src/emacs1/usrcom.515

@@ -185,6 +185,12 @@ Arg is line number to split screen at.!
      M(M.M Load_Library) DSK:EMACS;TDEBUG'
    F:M(M.M Debug_Mode)
 
+!CLU Mode:! !C Set up to edit CLU code.
+g(m.aC~DOC~ CLU Mode)jk!
+
+    M(M.M Load_Library)CLU
+    :M(M.M CLU_Mode)
+
 !Auto Fill Mode:! !C Break lines between words at the right margin.
 A positive argument turns Auto Fill mode on;
 zero or negative, turns it off.  With no argument, the mode is toggled.