Want to show direction of pipe dictated by upstream to downstream manhole? Try the following.
1. Right click on the GeoPlan and choose ‘Properties & Themes’.
2. Identify the Pipe Layer and click on the Theme button, see image below.
3. In the Pipe: Base Theme Dialog box edit the Base Theme, by first of all ticking the ‘Arrows’ check box and then selecting the value one in the combo-box from the newly displayed Arrows theme column. See image below.
It is possible to increase the number of arrows that appear on each pipe by choosing a number higher than one in the combo-box from the newly displayed Arrows theme column. And using a negative number reverses the direction of the arrow, see images below.