* CUSTOMIZATION

To customize user-defined settings, you have to open the "Preferences" window.
You can do it by clicking first on the "Edit" menu and then on the
"Preferences" entry.
Alternatively, you can press the 'p' key while holding down the Control key
(this is the shortcut Ctrl+P).

GTKMathplot uses several different colors to distinguish from each other the
objects drawn in the canvas.
In the "Preferences" window you can change the default color settings:
for every two- and three-dimensional shape (mind that GTKMathplot allows you 
to display several mathematical shapes at a time, each one identified by
a number) there is a combo which shows the color currently selected for 
that shape.
If you click on the combo a menu opens and from there you can select another
color by clicking on the entry with the color name.
In the same way you can change the colors used to drawn tics, grid, and axes
(x, y and z direction). Mind that the settings for two- and three-dimensional
graphic mode are separate.

If you choose to display a mathematical object using the "dotted" style,
the vertices forming the object are outlined using special symbols. 
For every two- and three-dimensional shape a specific symbol type is used:
this can be plus, square, diamond, cross or bullet.
In the "Preferences" window you can change also the default settings for
the symbol types: if you click on the combo associated to a shape, a menu
opens and you can choose a different symbol type by clicking on the
corresponding entry. Mind that the settings for two- and three-dimensional
graphic mode are separate.

When saving a graphic to a PDF or Postscript file GTKMathplot can choose
between different paper formats. The paper format used by default is A4,
but you can change it to A3, Letter or Legal by means of a menu which opens
whenever you click on the combo in the "Paper format" frame.

In the "Preferences" window you can also change the default values of the
following two options, both used when exporting a graphic to a PDF or 
Postscript file:

- the addition of GTKMathplot copyright statement, and

- the printing of the captions and equations of the objects appearing 
  in the graphic.

By default both these options are active: to deactivate any of them, toggle the
corresponding check button off by clicking on it. 
If later you want to activate an option again, it is sufficient to click on its
check button another time: the button is toggled on.

After changing one or more settings, close the "Preferences" window by clicking
on its "Close" button (or press the Esc[ape] key): the new settings will be 
applied at the current graphics and will be used later to display any new 
shapes, as long as you do not change settings again.
