3. DESCRIPTION OF PROBLEM OR FUNCTION
MORTRAN2 is a FORTRAN
language extension that permits a relatively easy transition from
FORTRAN to a more convenient and structured language. Its
features include free-field format; alphanumeric statement labels;
flexible comment convention; nested block structure; for-by-to,
do, while, until, loop, if-then-elseif-else, exit, and next
statements; multiple assignment statements; conditional
compilation; and automatic listing indentation. The language is
implemented by a macro-based pre-processor and is further
extensible by user-defined macros.