The Toolbar

The Tool Bar contains the following buttons:

Deletes the input data in the current program window and the corresponding section in the MEMORY.DAT  file.
Loads the input data for the current program window.
Sample data for each part of the program are stored in the file DEMO.DAT .
Saves the input data of the current program window.
Select dat  as file extension so that the file is displayed when it is opened with  .
  Cut, Copy and Paste:
Work like the corresponding functions in a word processor, i.e. also with Ctrl x, Ctrl c and Ctrl v. The marked part of the text is cut or copied and written to the clipboard. It can then be used elsewhere, e.g. inserted in a word processor.
Prints the results and, if applicable, the graphics of the current window.
Saves the graphic of the current window to the clipboard. This can then be inserted in a word processor or a graphics program.
  Coordinate system
With 2D graphics, the drawing area and the representation of the grid lines and curves can be set here.
To quit the program.
Loads the sample data directly from the file DEMO.DAT.
  Online Help:
Context sensitive help from my homepage, which is essentially identical to the local help.
It contains many links to additional information, e.g. on Wikipedia.

At the bottom of the screen you may change the language by clicking one of the flags.