			       USING AutoRedraw
Whenever you change the scale to look at a graph in greater detail or from
farther back, or you shift the range of the axes so that the graph you just
drew will be centered, the screen must be cleared so that a new coordinate
grid can be drawn. So you're left with the viewing angle you wanted for that
graph, but the screen is blank. You shouldn't have to solve this problem by
retyping the whole equation again...and you don't. You can redraw the equation
much more easily by selecting Pick graph in the Redraw menu. But with
AutoRedraw ON, you don't even have to do that.
    As its name suggests, AutoRedraw will redraw the last equation(s) you
typed in automatically when you change the scale or range. If you don't want a
graph redrawn, you can abort it by pressing ESC twice and you will be returned
to the equation editor. If you want to turn off AutoRedraw completely, just
select AutoRedraw under the Options menu and answer "n" when asked if you want
AutoRedraw on.
    To change the number of graphs redrawn automatically, you should also
select AutoRedraw from the menu. After responding "y" when asked if you want
it on, enter the number of graphs (1-25) that you would like to be redrawn
each time AutoRedraw is invoked. (If there aren't that many in the queue,
Graphmatica will just redraw them all.)
    AutoRedraw is ON by default.  You can change the default to OFF by turning
it off and using the Save Setup command to record this change.
				Press PgDn for more help on the Redraw Queue.
			       THE REDRAW QUEUE

Every time you type in an equation, the character string you typed and the
program's internal representation of that equation get stored in the redraw
queue. From this queue, or list, you can call up any of the last 25 equations
you typed to graph again with fewer keystrokes than retyping it. Or you can
redraw all of them or the just the last one you typed with even fewer
keystrokes. The equations in the queue are stored in an order that puts the
most-recently-used at the beginning and the least-recently-used at the end.
Hopefully, when the queue fills up, the equations that are bumped off the
queue at the end will be the ones you won't miss very much.

As explained above, the screen clears whenever you execute Range or a
successful Scale (if you abort Scale the screen remains as it was). If you
execute either of these functions or clear the screen accidentally with the
Clear menu option, you can redraw the last equation (if AutoRedraw hasn't
already) by selecting Last graph under Redraw, or you can redraw all of the
equations in the queue using Redraw All under the Redraw menu. Note that the
redraw function does not keep track of which graphs are on the screen at any
point in time so "redrawing all" may put more (if you plotted many equations
on the screen before the last one) or fewer (if you cleared the queue)
equations on the screen than there were before the screen was cleared.
				Press PgDn for more help on the Redraw Queue.
                              REDRAWING MANUALLY
The Pick graph option in the Redraw menu allows you to graph any equation
currently in the redraw queue. First choose an equation from the combobox by
clicking on it with the mouse or using the down key to highlight it and
pressing enter. Then, choose Pick graph from the Redraw menu. (If you do not
select an equation, the first one in the queue is used.) When you pick a
graph, it is re-inserted at the top of the redraw queue, as you'll likely be
working with it again. So if you scale the grid again, that graph will be
Auto-Redrawn, and if you redraw the last graph, that graph will be shown.
    You can redraw an equation more efficiently within the equation editor by
selecting the equation as above and then simply pressing enter (do not modify
the equation) while it is in the equation editor. The only advantage of the
menu item is that it allows you to pick and redraw one-handed with a mouse.
                             DELETING AN EQUATION
To remove an equation from the queue, simply select that equation from the
combobox and choose Delete Eqn from the Redraw menu. The equation is deleted
from the queue, although its graph will remain until you clear the screen.
                           CLEARING THE REDRAW QUEUE
Selecting Clear All from the Redraw menu essentially starts a new session,
except the options settings and grid size remain the same. All of the
equations in the queue are deleted, and the screen and labels (including
annotations) are cleared as well.
		     Press PgDn for help on saving and loading equation lists.
                       SAVING AND LOADING EQUATION LISTS
To save the equations you're working on, (as well as titles, annotations, and
options settings), select Save List from the File menu and enter a filename.
This file will be saved in the current directory with an extension of ".GR"
unless you specify differently. To save to diskette, insert A: or B: before
your filename. When asked if you want to include setup information, answer "y"
if you want to record the current size of the grid and options settings in the
file. Otherwise, only the text labels and equations in the queue are saved.
    To reload one of your equation lists (or one of the demo files), select
Open List from the File menu. You will be presented with a list of files
available. Choose a file by using the up/down arrow keys or mouse, [Cancel] to
return to the equation editor without loading a file, or [New path] to change
the current directory to look for files elsewhere. After you select a file to
open, if the redraw queue is not empty, you will be asked whether to add the
new file's equations to the existing queue or clear the queue first. Answer
"y" to clear the queue before loading the new file, or "n" to keep it. If the
file was saved with the Save setup option, the grid and special options
settings recorded in the file will be loaded and set automatically. After
loading the file, if AutoRedraw is on, Graphmatica will graph all of the
equations just loaded. You can also load a file when you run Graphmatica by
typing its name as a command-line argument. Those equations will be loaded
(and graphed) immediately after the opening screen.
───────────────End of Redraw help. Press ESC to return to menu.───────────────
