The purpose/meaning of buttons/icons in short

Reload
The wand (re)loads a diagram.

Stitch
The character inside the circle determines the origins of the pairs used to make the stitch. The default cheat sheet shows all you need to assemble a pattern. An extended version shows additional symbols used in legacy patterns.

Color code rules
This icon leads to the rules for a color code with up to four colors per stitch.
The Droste pair diagrams still use a single color per stitch.

Panel size
Depending on the browser/device, the diagrams may have a hot corner in the south-east, where the sliders meet. Drag this corner to adjust the available space. The buttons shown here are an alternative when the hot corner is not available, for example on touch devices. A half minute video clip shows how to use the second set of buttons.

formerly: Animate
The attracting and repelling forces create more or less regularly sized holes in the thread diagram. It may bridge the difference in shapes of the holes between pattern definition and thread diagram. For example for dropped stitches or irregular holes. An example of the latter is the TesseLace pattern 3x4_447 which becomes surprisingly regular. See also reshape patterns.

Download
Scalable images for 3rd party editors, or templates for an Inkscape plugin.