Contours with the same surface number on adjacent sections will be connected. I Ignore time values and connect contours at different times. This option can be used to override this behavior, in case the contours contain inappropriate time information. Do a final pass through the contour data and make any leftover connections with looser constraints on contour overlap. This pass occurs after any multiple passes selected with the - P option.
Open contours are by default connected together in a mesh if possible.
Closed contour objects included in the list will be meshed as usual. The diameter is given in pixels, the default value is the line width of the current object. T Do more time consuming calculations by searching exhaustively through all possible sets of connections instead of guessing at one initial connection. This may help reduce artifacts in some cases. This flag can cause the computation to take an order of magnitude more time.