[Doug Norman]

There is another sneaky trick you can use to create your own Boolean glyphs. You can draw them in the icon editor (double-click on the icon in the upper right corner of a VI to edit it). I typically use a new Untitled VI to draw my glyphs. Once you have the glyph you want, type Ctrl-c (in the editor) to copy it to the clipboard. You now have a glyph ready to paste when you edit a Boolean indicator.

On a separate VI, drop a Flat Square Button: To do this, right-click on the front panel and go to Classic>>Classic Boolean>>Flat Square Button. Highlight the button and then in the menus click Edit>>Customize Control... A new window will open where you can edit your control. Right-click on the control and choose Import Picture from Clipboard>>True for your T glyph and Import Picture from Clipboard>>False for your F glyph. When you are done, choose File>>Save to save your custom control.

One limitation to this approach is you are limited by the size of the VI icon (32x32), but I find this to be good for most of my custom Booleans.

Attached is a zip that contains an up arrow control and a down arrow control I created using this method.