Description
%RCLSRC->XLEFT = %D, PRCLSRC->YBOTTOM = %D
PRCLSRC->XRIGHT = %D, PRCLSRC->YTOP = %D
%RCLDST->XLEFT = %D, PRCLDST->YBOTTOM = %D
PRCLDST->XRIGHT = %D, PRCLDST->YTOP = %D