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The LDP wiki is the LDP workshop/workbench. You will find here the more recent work done by and for the LDP. This also mean alpha or beta level documentation as well as most uptodate one.
For the "stable" documentation, see here (the LDP Front page), or
"static" HOWTOs (dated; even sorted by stable, old, to be revised, obsolete - some times old)
list of HOWTOs in the wiki