Altium Designer Documentation
...
Dialog Reference
A to F
Arrow Style
Created: May 24, 2017 | Updated: June 15, 2017
| Applies to version: 17.1
This document is no longer available beyond version 17.1. Information can now be found here: Board Section View Properties for version 25
The Arrow Style dialog.
Summary
The Arrow Style dialog allows you to set arrow style, thickness, and length for use in board section views within Draftsman documents.
Access
The Arrow Style dialog can be accessed from Board Section View mode of the Properties panel by clicking the 
button next to the Arrow Style option.
Options/Controls
Select the desired arrow head from the Head Style drop-down. Type directly into the text boxes to edit the Width, Length, and Full Length fields. The measurement used by default is mm.