You can make triangles. All in various widths, of course. You can even make lines showing movement. Put arrows at the end if you want. All of these options are simple keystrokes in Arboreal.
Documents using fonts instead of graphics takes up less disk space and print faster.
When you buy Arboreal for Macintosh, you'll receive seven sizes of the screen font, the PostScript font, and the TrueType font. System requirements are System 6 with TrueType, System 6 with a PostScript printer, or System 7 or higher. Arboreal for Windows includes the TrueType font, and requires at least Windows 3.1 or higher. Both versions include detailed instructions with clear examples and a key map to leave by your computer, and both versions work with all current operating systems and applications. This section is excerpted from the instructions which accompany Arboreal.