+ (OBString *) aslFile:(OBString *)oldpath title:(OBString *)title doSave:(BOOL)save reference:(MUIArea *)ref filter:(OBString *)filter
Standard single-file save/load ASL. Returns a string with absolute path
+ (OBString *) aslFile:(OBString *)oldpath title:(OBString *)title doSave:(BOOL)save reference:(MUIArea *)ref filter:(OBString *)filter exists:(BOOL *)exists
In save mode, this stores YES in 'exists' if file already exists
+ (OBArray *) aslFiles:(OBString *)oldpath title:(OBString *)title reference:(MUIArea *)ref filter:(OBString *)filter
Returns an array of absolute path strings