Check if Term exists.

Whether there are translations for the text domain.

Determines if there is any upload space left in the current blog’s quota.

Deprecated functionality for determining if the current plugin is network-only.

Load the translated strings for a plugin residing in the mu-plugins directory.

Gets the URL to access a particular menu page based on the slug it was registered with.

Defines Multisite cookie constants.

Defines Multisite file constants.

Displays a failure message.

Checks status of current blog.