Increments numeric cache item’s value.

Is the query the main query?

Core class used to implement an admin screen API.

Constructor

Add a help tab to the contextual help for the screen.

Sets the old string-based contextual help for the screen for backward compatibility.

Adds an option for the screen.

Fetches a screen object.

Gets the arguments for an option for the screen.

Removes a help tab from the contextual help for the screen.