New proof

There are two text fields on the "new proof" -dialog, one for each side of the proof. The upper text field is for the left side of the proof, i.e. for the "assumptions". The larger text field is for the right side of the proof, i.e. the formulas to be proved.

You can write multiple formulas on both sides separated by commas. Words beginning with an uppercase letter are considered symbols. Words beginning with a lowercase letter are considered connectives (such as impl or and). Symbols and connectives should be separated with at least one space. You can both write using the keyboard, or the short-cut buttons provided in the dialog.