.LP
Used to evaluate logical expressions.
Result of evaluation will be returned as "1" for TRUE,
or "0" for FALSE.
.LP
Recognized logical operators include:
.nf
\f(CW
"=="     See if two expressions are equal (C style)
">"      See if first expr is greater than second (C style)
"<"      See if first expr is less than second (C style)
">="     See if first expr is greater/equal than second (C style)
"<="     See if first expr is less/equal than second (C style)
"!="     See if first expr is less/equal than second (C style)
"&&"     AND two expressions together (C style)
"||"     OR two expressions together (C style)
"!"      NOT one expression (C style)

".EQ."   See if two expressions are equal (fortran Style)
".GT."   See if first expr is greater than second (fortran style)
".LT."   See if first expr is less than second (fortran style)
".GE."   See if first expr is greater/equal than second (fortran style)
".LE."   See if first expr is less/equal than second (fortran style)
".NE."   See if expr are not equal to second (fortran style)
".AND."  AND two expressions together (fortran style)
".OR."   OR two expressions together (fortran style)
".NOT."  NOT one expression (fortran style)
.\fP
.fi
