ocr: Toolboxtrap dispatc ht table Addess SYYYYYYYY 1024 Trap dis patcl her Applicationcalls a Toolbox Gets the trap the dspatch addess table from routine Transfers control to the FillRect (r, pat)i routine attheretrieved address Patcl h System S oftwareroutine PROCEDURE PROCEDURE MyPatchrillRect FillRect (r: Recti pat: Pattern)i (r: Rect; pat: Pattern); Calls orginal routine ($XXXXXXXX)