The support of the keyboard is added.
The found and eliminated errors of previous version:

1. Error of calculation of functions sec [], cosec [], sech [], cosech [].
   The error consist of that the functions settled an invoice only from complex numbers. If the actual or imaginary part was absent, the functions returned a zero.
2. Error StepBackward for the previous calculation result of evaluations PR.
   If to press a button PR, and then UNDO the program was completed under abnormal condition.
3. Error with removed skins files.
   If to delete all skins files the program at start-up was completed under abnormal condition.

The first public release.

We plan to develop the project and further.
The plans for the following version:

1. Management of a history of evaluations with a capability of export in various formats.
2. Activity with the MS WINDOWS© Buffer.
3. Input of user’s defined variables.
4. Calculation of tables under the formula.
5. Making plots in various coordinate systems.
6. Formula with units of measurement of a SI.
7. Extension of functions (Functions of a statistics, Spherical, Matrixes, Numerical integration and derivation)