For Rooms cut by Match Lines, perimeter will be calculated not accounting the side created by a Match Line
Match Lines will be applied in a sheet in a course of a processing, so the first step is to add them and process document
In Left Panel menu add one or several and Match Lines inside a Takeoff Zone
Match Lines can only be added to existing Takeoff Zones in AI-Setup mode
Added Match Lines are processed automatically:
After processing, Match Lines are added to sheets in Takeoff Mode
Match Lines can only be changed in AI-Setup mode after processing and are not selectable in Takeoff Mode