Determines whether the current visitor is a logged in user.

Sets up most of the KSES filters for input form content.

Adds all KSES input form content filters.

Maps a capability to the primitive capabilities required of the given user to satisfy the capability being checked.

Unserialize data only if it was serialized.

Prints link to the next post.

Set the headers to prevent caching for the different browsers.

Execute WordPress role creation for the various WordPress versions.

Create the roles for WordPress 2.0

Determines if a post exists based on title, content, date and type.