: P
    EDPOS @ _cpos C<
    64 0 DO ( bpos c )
        DUP 0xd = IF DROP 0 THEN
        2DUP SWAP I + C!
        DUP IF DROP C< THEN
    LOOP
    2DROP
    BLK!!
;

: _mvln+ ( ln -- move ln 1 line further )
    DUP 14 > IF DROP EXIT THEN
    _lpos DUP 64 + 64 MOVE
;