7.2.3.33 $LANGUAGE: Identifier for current language

This expands to an identifier that denotes the current language, as follows:

Language	$LANGUAGE
C	$C
C++	$CPP
Fortran	$N
Fortran-90	$N90
Ratfor	$R
Ratfor-90	$R90
TeX	$X
VERBATIM	$V

Note that this outputs identifiers, not FWEB macros. They are intended to be used in $IF or $IFELSE statements such as

$IF($LANGUAGE==$C, C-text, other-text)

For multiway switches, the $LANGUAGE_NUM built-in is more useful; see $LANGUAGE_NUM.