%SQUARE TRANSFORMATION CONTROLS
%
%   The SQUARE TRANSFORMATION control panel allows the user
%to alter the current function by directly controling
%specific aspects of its graphics representaion (its
%"square", or parallelagram, as seen in the graphics
%window).  Except for the FLIP buttons, all characteristics
%may be accessed either by their slider control, or
%directly by their editable text window, where values or
%expressions may be entered directly (see GENERAL help).
%All displayed values represent a measurable characteristic
%of the function, and are all updated when any changes to
%the function are made.
%   The SHIFT controls allow the user to translate the
%current function while maintaining its shape, size, and
%orientation.  The operational values are the co-
%cordinates of the point Y.  The function may also be
%shifted manually using the button at the center of its
%figure (see GRAPHICS WINDOW).
%   The ROTATE controls allow the user to rotate the
%current function while maintaining its shape and the
%location of the point Y.  The reference angle is that of
%the line YZ, measured counterclockwise in degrees from the
%positive horizontal.
%   The ANGLE XYZ controls allow the user to change the 
%"slant" of the figure, while maintaining the lengths of
%all sides and the position of side YZ.  The angle is
%measured counterclockwise in degrees.  Entering the values
%"90" or "270" will make the current figure a perfect
%rectangle.  Values of "0" or "180" will make the matrix A
%singular.  Although such matricies have zero determinant,
%they will appear in the fractal image as "sticks".  They
%might, however, cause numerical errors in the CONTROL
%PANEL displays.  These errors may be ignored if the image
%in the GRAPHICS WINDOW is of the desired shape (and if
%they don't crash the program entirely).  
%
%   ...Move the pointer over this window and 
%      press any key to continue...