Section 3--414. Contract of Indorser; Order of Liability.

(1) Unless the indorsement otherwise specifies (as by such words as
"without recourse") every indorser engages that upon dishonor and any
necessary notice of dishonor and protest he will pay the instrument
according to its tenor at the time of his indorsement to the holder or
to any subsequent indorser who takes it up, even though the indorser who
takes it up was not obligated to do so.

(2) Unless they otherwise agree indorsers are liable to one another in
the order in which they indorse, which is presumed to be the order in
which their signatures appear on the instrument.