Routine:        Error   
Function:       Displays error message and waits for a key to be pressed
Called by:      Chk1, Chk3, Fpint, Measno, Recip, , Vischk
Calls:          Err, Wait
Entry:          A holds error code
Exit:           A holds key code
Preserved:      IX,IY,E


ERROR   CALL    ERR
; Call subroutine Err to display the error, then Wait to pause until a key is pressed.
        CALL    WAIT
        RET