show reserved variables on catalog and help

[compsystems]

please, in the "help topics" win to adhere a new item "reserved variables" also on catalog (submenu), is hard to remember the internal names when programming

DOM_INT
DOM_FLOAT
DOM_STRING
DOM_SYMBOLIC
DOM_FUNC
DOM_LIST
etc
...

Code:

.... local l;
 IF (type(g)==DOM_SYMBOLIC  OR type(g)== DOM_FUNC)
   THEN 
    l:=MAKELIST(X,X,a,b,(b-a)/n);
      IF type(g)==DOM_SYMBOLIC THEN
      g:=unapply(g,x);
      END;