This is a must have for any mapper or scenario designer. It should be really easy to get started if you're familiar with Forge's Visual mode and it has a couple of great improvements over Forge.
I've made a lot of maps in the past that are close to the 1024 poly limit and it takes a lot of time to texture these maps in Forge because of it's limits and crashes. This makes it so much easier, kudos to Treellama and Irons for this gem!
Visual Mode is a plugin that allows you to texture maps in Aleph One. It supports almost all features of Forge's visual mode, plus OpenGL, multiple texture sets, and more. Requires Aleph One 1.7.