If READC function reads only modified records of a Subfile(SFL), I would like to know if there is any system function or it is any way to know the amount of modified records on a subfile(SFL) using an RPG file.EjemploREADC SUBFILE1; DOW %EOF = *OFF; IF VAR_FIELD_1 = 'A'; SUM = SUM + 1; ENDIF;...