First defined in: FKiSS4
The letinitx action sets the value of variable to the
initial horizontal position of target for the current set (page).
variable
variable must be a variable name.
target
In FKiSS4, target may be an object number or a
variable representing an object number.
Example:
;@ letinitx(X, #5) ; Put the initial horizontal position of object #5 into variable X.
;@ letinitx(X, VarObj) ; Put the initial horizontal position of the object identified by variable VarObj into variable X.