CRSHFA ( faces, sheet, ifail )
==============================

  Create sheet body from faces

Receives:
  KI_tag_list_face         *faces          --- faces to use in sheet

Returns:
  KI_tag_body              *sheet          --- new body
  KI_cod_error             *ifail          --- failure code

Specific errors:
  KI_not_in_same_part       Faces not all from same body
  KI_missing_geom           Face does not have surface
  KI_non_manifold           Faces have non-manifold or disconnected boundary
  KI_general_body           general body

Description:

  The geometry, topology and associated data of the faces is copied into
  a new sheet body.  The given faces must belong to the same body and
  must form a single connected set whose boundaries are manifold.  Every
  face must have a surface attached.

  This function is not supported for faces on general bodies.