<b>Use preestimated length</b> check box lets you specify \b length
automatically calculated basing on size of your geometrical object,
namely as diagonal of bounding box divided by ten. The divider can be
-changed via "Segmentation of diagonal of boundary box of geometry"
+changed via "Ratio Bounding Box Diagonal / Max Size"
preference parameter.
<b>Use preestimated length</b> check box is enabled only if the
geometrical object has been selected before hypothesis definition.
