Determines whether the current post is open for pings.

Gets the basename of a plugin.

Create WordPress options and set the default values.

Retrieves post custom meta data field.

Prints a link to the previous post.

Displays the previous post link that is adjacent to the current post.

Sets up The Loop with query parameters.

Removes an item or items from a query string.

Rewind the loop posts.

Display the rss enclosure for the current post.