Corrections are welcome. These pages describe a lot of systems, some of them barely maintained, and details go out of date.
If something here is wrong, say so and it will be fixed or removed. Specifics help more than general disagreement: which page, which claim, and what it should say instead.
Send corrections or questions to [email protected].
This site is not a migration service and does not take on client work. Questions about moving a specific site are better directed at someone who does that for a living.