API reference

Topics

NameDescription
Content markersMarkers used by theme_mark() and node_mark() to designate content.
Default theme implementationsFunctions and templates that present output to the user, and can be implemented by themes.
Functions to coordinate long-running operations across requests.In most environments, multiple Drupal page requests (a.k.a. threads or processes) will execute in parallel. This leads to potential conflicts or race conditions when two requests execute the same code at the same time. A common example of this is a…
Image toolkitsDrupal's image toolkits provide an abstraction layer for common image file manipulations like scaling, cropping, and rotating. The abstraction frees module authors from the need to support multiple image libraries, and it allows site…
Menu flagsFlags for use in the "type" attribute of menu items.
Menu item typesDefinitions for various menu item types.
Menu status codesStatus codes for menu callbacks.
Menu systemDefine the navigation menus, and route page requests to code based on URLs.
Menu tree parametersParameters for a menu tree.

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