Drawing Arrows from note boxes

Many trees have explanatory notes have arrows pointing to part of an argument usually to explain what is going on there. How does one draw an arrow from a not to a reason of a contention box? There is an example Quick Start tree under Advanced Reasoning [url=https://www.rationaleonline.com/editor[/url].

Hi Mendel,

Left click on the box with which you want to add a note. The border of the box will now be blue. Next give Ctrl+A.

Or drag a note out of the Building panel with your mouse and connect it with the box by moving it near/ above the box until they connect.

Or right-click on a box and choose Add note.