+Programming Kit is available (libglpk). On Debian-like systems (ex. Ubuntu),
+install the package "libglpk-dev".
+
+To see the output of this mode, run:
+lttv -m sync_chain_batch --eval-graphs [usual options, ex: -t traces/node1 -t
+traces/node2 --sync ...]
+
++ Reduction Algorithms
+Event analysis yields time correction factors between trace pairs. For groups
+of more than two traces, an extra step is necessary to identify a reference
+trace and calculate correction factors for each trace relative to this
+reference. There are usually many possibilities and so this step is called
+"factor reduction".
+
+++ Accuracy
+At the moment, only one algorithm is available to do this, the "accuracy"
+algorithm. This algorithm tries to choose the reference and the factors that
+yield the best accuracy. See the function header comments in
+factor_reduction_accuracy.c for more details.