View common vertex of two map objects

The mode is intended for a visual estimation of a metric coordination of two adjacent objects of a map (having common vertices).

After activation of a mode it is necessary to choose consistently two objects on a map.

Common vertices of two objects are displayed by green color, «free» vertices of the first chosen object are displayed by red color, «free» vertices of the second chosen object are displayed by yellow color. The intersection points are displayed in purple and have a larger size.

Comparison of coordinates is carried out within millimeter on district (the third sign after a comma).