  In this article we study modules over wild canonical algebras which
correspond to extension bundles [9] over weighted projective lines. We prove
that all modules attached to extension bundles can be established by matrices
with coefficients related to the relations of the considered algebra. Moreover,
we expand the concept of extension bundles over weighted projective lines with
three weights to general weight type and establish similar results in this
situation. Finally, we present a method to compute matrices for all modules
attached to extension bundles using cokernels of maps between direct sums of
line bundles.
