We certainly don't claim that our atlas is complete by any means. While we've tried to include most of the basics to get us started, there are practically an infinite number of entries waiting to be added. If there is something that you feel is crying out to be covered, fill in the following form and after being reviewed we'll add it to the atlas.
Note that currently you must have a saved Geometry Expressions file to add to the atlas.
If you entry does not fit into the current categories, make a note of that in the Header and we'll consider making a new category.