Bug overview description.

The tag search cheatsheat says:

By default, posts are ordered from highest ID to lowest ID (newest posts first). This is the same as order:id.

In fact, order:id sorts from lowest ID to highest ID (oldest posts first), the opposite of what is described.

What part(s) of the site page(s) are affected?

https://e621.net/help/show/cheatsheet#sorting

Thank you for pointing that out. I've updated the page in question to correct the problem.