Features
Feel free to compare with other CMSs
A CMS...
Any kind of (texual) documents of quite any size
Easy inclusion of images & flash documents (TinyMCE)
Users, roles and rights management
Multi-language administration interface
Automatic backups
Full featured page templates (XSL)
...LIGHT...
No need for database, based on XML
Use (nearly ubiquitous) PHP, with no special PHP configuration needed
Flawless copy server-to-server
Fast
...and EASY
General configuration with one simple file
XSLT is standard, fully documented, no strange inconsistant language
Modular source-code
Source-code is open (GPL2), documented (inside and in the documentation page ), and is kept simple