To run ALE, it is only necessary to type the following query:
| ?- compile(ale).assuming that ale.pl is the file in which ALE resides. SWI Prolog users must type:
| ?- consult(ale).If ale.pl is not local to the directory from which Prolog was invoked, a path-name can be added in single-quotes. The syntax of pathnames is operating-system specific.
In SICStus Prolog, when ALE is loaded, it turns on Prolog character escapes. ALE will not be able to generate code properly during compilation without this.