&track
long center_on_orbit = 0;
long center_momentum_also = 1;
long soft_failure = 1;
long use_linear_chromatic_matrix = 0;
long longitudinal_ring_only = 0;
&end
center_on_orbit -- A flag indicating whether to center
the beam transverse coordinates on the closed orbit before tracking.
center_momentum_also -- A flag indicating whether to
center the momentum coordinate also.
soft_failure -- If there is an error during tracking (e.g.,
a failure of orbit correction), continue to produce file output. This
creates essentially empty slots in the files corresponding to the failed
steps.
use_linear_chromatic_matrix -- For each particle, a first-order
matrix is computed for the particular momentum offset
of the particle using the linear chromaticity and linear dependence of
the beta functions on momentum.
longitudinal_ring_only -- Tracks longitudinal coordinates only
for a ring.