[SIC\]ELSE [IF Logical_expression [THEN]]
Conditional directive in an IF-END IF block. Similar to Fortran ELSE and
ELSEIF statements, but note that here the space between ELSE and IF is
compulsory, while the THEN keyword is optional. If the compulsory space
bothers you, just define the following symbol
SYMBOL ELSEIF "SIC\ELSE IF"