scriptability
regression tests
Pass-by-value should be avoided for objects.
Chemical treatment as base class for fragmentation and cleavage ?
Remove spaces and similar from formulas entered in the XpertCalc.
Maybe introduce factoring with parentheses.
When adding with chemical pad, does not clear the previous masses when cleared using clear button.
Setup sections in the chem pad.
Put a scroll view in the chemical pad.
Alt-F should put cursor in the Formula line edit widget in XpertCalc.
