( Native words )
H@ 5 + XCURRENT ! ( make next CODE have 0 prev field )
CODE _find  ( cur w -- a f )
    HL POP, ( w ) DE POP, ( cur ) chkPS,
    HL PUSH, ( --> lvl 1 )
	( First, figure out string len )
    A (HL) LDrr, A ORr,
	( special case. zero len? we never find anything. )
    IFZ, PUSH0, JPNEXT, THEN,
    BC PUSH, ( --> lvl 2, protect )
( Let's do something weird: We'll hold HL by the *tail*.
  Because of our dict structure and because we know our
  lengths, it's easier to compare starting from the end. )
    C A LDrr, B 0 LDri, ( C holds our length )
    BC ADDHLd, HL INCd, ( HL points to after-last-char )
                                                     ( cont . )