%GRAPHICS WINDOW
%
%   The GRAPHICS WINDOW is the window to the right of the
%Control Panel.  It has axes corresponding to the unit
%square.  In it, the functions in the FRACTORY workspace
%are represented as the image of the unit square under
%that function.  The "current function" (see FCN SELECTION)
%is represented by a purple solid line and four buttons.
%All other functions are represented by white dotted lines
%if they are currently "on" (see FCN SELECTION).  They are
%not visible if they are "off".  Clicking the mouse button
%over the interior of a function selects that function as
%the "current function."  If the pointer is in the interior
%of several functions simultaneaously, successive clicks
%cycle through all such functions.  The final fractal
%images are also drawn in the GRAPHICS WINDOW using the same
%axes (see DRAW FRACTAL).
%   The current function has four buttons, or "handles"
%attatched to it (not to be confused with MATLAB's graphics
%handles).  Three are at the controlable corners (see
%CORNER CO_ORDS) and the fourth is at the center of the
%square.  These handles allow the user to manualy manipulate
%the function.  To activate a handle, you must press the
%mouse button AND THEN RELEASE IT.  DO NOT ATTEMPT TO MOVE
%THE HANDLE WHILE HOLDING DOWN THE MOUSE BUTTON.  Pressing
%and releasing the mouse button while the pointer is over
%a handle activates that handle.  The handle will then
%follow the pointer until the mouse button is again
%pressed and released.  Moving a corner handle moves that
%corner of the square (and thus the fourth corner W), while
%the other corner handles remain fixed.  The central
%label-less handle translates the entire square, similarly
%to the SHIFT controls (see SQR TRANSFORM).  Using these
%handles updates all information on the Control Panel,
%including the FUNCTION ON box, which is deactivated when
%any part of the square goes out of bounds (see FCN
%SELECTION).
%
%   ...Move the pointer over this window and
%      press any key to continue...