# Wombat IDE - Updated tree and image libraries

Continuing the update to the Petite back-end, I’ve rewritten the matrix library and most of the image library (everything except for read-image, write-image, and draw-image). The current code is all in Scheme, although I don’t want to write the image loading/saving code in Scheme otherwise we’ll be back into the original situation with the C211 libraries. The APIs haven’t changed though, so the previous APIs are still valid:

The only difference is that the libraries are no longer loaded by default. To load the libraries, you need to import them:

(import (c211 matrix))
(import (c211 image))

If you want to switch over to the new versions of Wombat, you can get it here. You should have at least version 2.48.12.