Function if

sys/amiga/amiwind.c:221–237

        }
#ifdef CLIPPING
        else if (WINVERS_AMIV && control) {
            EditClipping();

            CO = (w->Width - w->BorderLeft - w->BorderRight) / mxsize;
            LI = (w->Height - w->BorderTop - w->BorderBottom) / mysize;
            clipxmax = CO + clipx;
            clipymax = LI + clipy;
            if (CO < COLNO || LI < ROWNO) {
                clipping = TRUE;
                amii_cliparound(u.ux, u.uy);
            } else {
                clipping = FALSE;
                clipx = clipy = 0;
            }
            BufferQueueChar('R' - 64);
            return (-1);
        }
#endif
        else if (WINVERS_AMIV && shift) {
            if (WIN_OVER == WIN_ERR) {