When using REX external to Metamorph in DOS or Unix, it can
occasionally occur that a very complicated expression requires more
memory than is available. In the event of an error message indicating
not enough memory, you can try the same expression using
``REXL'', another version of REX compiled for large
model. As ``REXL'' is slightly slower than ``REX'' it
would not be recommended for use in most circumstances.
The beginning of line (^) and end of line ($)
notation expressions for DOS are both identified as a 2 character
notation; i.e., REX under DOS matches \X0d\X0a (carriage
return [cr], line feed [lf]) as beginning and end of
line, rather than \X0a as beginning, and \X0d as end.