Retro1.org codex

&LITERAL FUNCTION                                        EXEC built-in function

Use the &LITERAL function to inhibit variable substitution on the specified
token.  The &LITERAL function may appear in any EXEC control statement.  The
format of the &LITERAL built-in function is:
+-----------------------------------------------------------------------------+
| [...] &LITERAL token [...]                                                  |
+-----------------------------------------------------------------------------+
where:

token    specifies the token whose literal value is to be used without
         substitution.  For example:
            &X = **
            &TYPE &LITERAL &X EQUALS &X
         results in the printed line:
            &X EQUALS **