1. A portable phone having a display, input means for inputting information and instructions to a control unit in the phone, said control unit controlling the display in dependence on the operation of the input means; said input means including: means for moving a marker in the display; and means for providing a request to the control unit for displaying operations which are allowed in a position defined by said marker; said control unit generating a pop-up window which covers a part of the display upon reception of the request, and which includes said allowed operations.