First defined in: FKiSS3
For ifequal, the conditional block is executed if A is
equal to B (i.e. A == B).
A
A may be a number or a variable.
B
B may be a number or a variable.
Example:
;@ ifequal(X, 1) ; If X equals 1 then show "doll.cel".
;@ map("doll.cel")
;@ endif()