WordFormFactor gives more score to
the original word forms written
in a search query, and to give less scores to
fuzzy word forms generated
number should be in the range 0..255,
with lower values meaning stronger effect.
The default value is 255, which means to give the same
weight to the original and the fuzzy forms.
0 means maximum effect, i.e. weight for the generated word forms
will be much smaller than weight for the original word form.
This command appeared in mnoGoSearch version 3.3.0.