WordPress MU

Can anyone tell me the standard to writing mu-plugins?

The standard should be very similar or even the same as writing for standard WordPress. Don't know if you've looked at the following link yet but I'm sure it will be helpful.

http://codex.wordpress.org/Writing_a_Plugin

Thanks for the reply.
I have read the documentation for writing a plugin for wordpress but couldn't find anything for wpmu and was wondering if anything is different, or if there are a few important differences.
There probably aren't any or somebody would've written something about it till now :)

The functions should be almost identical with the only real obvious difference being that plugins can be activated by individual blog admins if you place the plugin in the "plugins" folder and the plugin is auto-activated for everyone if you place your plugin in the "mu-plugins" folder. Plugins in that folder as well need the main php plugin file in the root and not a directory.

Trent

I also find your related issues!

There are some additional functions with WPMU and those are documented, but currently there isn't any documentation or standard for WPMU plugin development. There are differences between WPMU and WP that make many WP plugins not work unless modified, simply because of the difference in structure between the two.

What are those differences?

Look here:
http://mu.wordpress.org/forums/topic.php?id=9018