How to place a fence along a boundary

Steps

1. 1
   Choose a fence section and place it in the corner of the plot.
2. 2
   Select the section. In the properties window, expand Row: how many pieces, row length, which way it goes. Click Place.
3. 3
   For the next side, place a section in its corner, rotate it with the Rotate 90° clockwise button in the properties window, and build the row again.