 to do until v0.2
==================
* add error handling in parse() !!!
+ done, 24.11.1997

* add option to show a grid in the plot window
+ done, 30.11.1997

* give the "print" menu entry a function
+ done, 30.11.1997

* add display of current cursor position (in statusbar)
+ done, 01.12.1997 - might look better, but it works

* get the toolbar working
+ done, 17.12.1997

* add more functions
+ most of the function from math.h added, 18.12.1997

* allow user to marks an area that is shown bigger using the mouse
+ done, 19.12.1997

* finally fix that bug that causes kapp->mainWidget->repaint( TRUE ) to fail!!!
+ done, 20.12.1997

* add tooltips
+ mostly done, 22.12.1997

* create lsm entry
+ done, 22.12.1997

* create kdelnk file

* complete german translation


 to do after v0.2
==================
**** Descriptions for functions

* save settings between sessions (SM)
+ done, 25.12.1997

* add option to ask for confirmation before deleting a function
+ done, 26.12.1997
- add "save options" menu entry

* put the toolbar widgets in frames
+ done, 15.01.1998

* allow user to add text labels
+ partly done, 27.12.1997
- add label overview dialog
  + done
- save labels between sessions
  + done, 15.01.1998
- paint a pixmap for the toolbar
  + currently "smalltext"
- paint a cursor showing a crossCursor with a small "T"
- allow user to drag labels

* create icon

* "save settings" menu entry

* let the user choose between different angle modi (DEG, RAD, GON)

* add second toolbar for setting the coordinates

* show a messagebox that describes errors in functions better

* small problem (not really a bug) in paintLabels(). see comments there.

* export graphics (.gif, .ps, ...)

* create new QListBoxItem to show linestyles in overview dialog

* simplify expressions e.g.
	(1/2)^2 => 0.25 - speeds up plotting
+ mostly done, 07.02.1998

* make the overview dialog non-modal

* overview over constants

* add option to use the same scaling on both axes

* add option to set e.g. 1 = 1cm when printing
+ done

* allow logarithmic scale on the axes

* online help

* allow user to add new functions and constant values in a script file. e.g.
	tan(x):=sin(x)/cos(x)
	k:=0.005
+ done for constants
+ done, 23.01.1998
  - functions with paramters, e.g. f_t(x)=1/(1+tx^2)

* 3D-plots

* basin plots

* derive functions
  - plot tangents
+ done, 07.02.1998

* numeric integration

* use KButtonBox in Dialogs

* add function to create a second main window

* clean up the code

* programmers' documentation
