  An analysis of spontaneously broken chiral symmetry in light-cone field
theory is presented. The non-locality inherent to light-cone field theory
requires revision of the standard procedure in the derivation of Ward-Takahashi
identities. We derive the general structure of chiral Ward-Takahashi identities
and construct them explicitly for various model field theories.
Gell-Mann-Oakes-Renner relations and relations between fermion propagators and
the structure functions of Nambu-Goldstone bosons are discussed and the
necessary modifications of the Ward-Takahashi identities due to the axial
anomaly are indicated.
