Changes

If a BASIC game should issue a MEMORY FULL error, the easiest test is to say RETURN. If Unexpected RETURN doesn't occur and the code tries to continue, it will be a sign of Subroutines not being able to RETURN after a GOSUB ia issued. The easiest course is to remove Subroutines. A game for example may have a series of GOSUBs going to a line checking IF something is true, and if so GOTO somewhere else where a RETURN may not be found. In those situations a GOSUB should be replaced with an IF...THEN..[line number] thus removing the Subroutine.

== BASIC tokens ==