The input is a sequence of x characters; the length of the output sequence is the same as the length of the input sequence.
Calculation takes time - watch your browser's download indicator!
Calculation time depends on FST complexity (size and non-determinism), parameter settings and (unpredictablely) server load:
Trace=on is normally needed only for debugging.
Graph=on is useful for visualisation in general (in which case it is only needed once - the graph can be saved), but also for debugging.
Compact=yes shows the graph with sets of parallel transitions reduced to a single arbitrary member of the transition set.
Decoration=on additionally displays output item count and (with arrows) transducer Direction selection.