subroutine OS_EditCut(string: Field_Name)

subroutine OS_EditCopy(string: Field_Name)

subroutine OS_EditPaste(string: Field_Name)

subroutine OS_EditDelete(string: Field_Name)

Cuts / Copies / Pastes / Deletes the selected text in the named entry field.

If no text is selected, cuts/copies/deletes the whole field.