Parameters of tracing

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- Stop at intersections with visible objects of a map. At using this parameter in a mode of a semiautomatic tracing the program stops a tracing at intersection of the already existing map object which is included into a structure of displayed objects.

- Control tracing. At using this parameter in a mode of a semiautomatic tracing the program moves a map with the speed, set in Speed parameter, allowing the operator to watch process. It is possible forcedly to stop tracing process by pressing of Esc key).

- Search for continuing at lines breaks. At using this parameter in a mode of a semi-automatic tracing the program searches for the continuing on the breaks of lines of a raster in the sector specified in Searching sector parameter on the distance specified in the Searching radius parameter.