(<EM>begin</EM>_<EM>x</EM><STRONG>,</STRONG> <EM>begin</EM>_<EM>y</EM>) on the pad. The window is made in the middle of the
window <EM>orig</EM>, so that changes made to one window affect both windows.
During the use of this routine, it will often be necessary to call
(<EM>begin</EM>_<EM>x</EM><STRONG>,</STRONG> <EM>begin</EM>_<EM>y</EM>) on the pad. The window is made in the middle of the
window <EM>orig</EM>, so that changes made to one window affect both windows.
During the use of this routine, it will often be necessary to call