Drupal 8

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Namesort ascending Description
Image toolkits Functions for image file manipulations.
HTTP handling Functions to properly handle HTTP responses.
Hooks Allow modules to interact with the Drupal core.
Hook implementations for user-created content types Functions that implement hooks for user-created content types.
Formatting Functions to format numbers, strings, dates, etc.
Form generation Functions to enable the processing and display of HTML forms.
Form builder functions Functions that build an abstract representation of a HTML form.
File module public API functions These functions may be used to determine if and where a file is in use.
File interface Common file handling functions.
Field Widget API Define Field API widget types.
Field Types API Defines field, widget, display formatter, and storage types.
Field Storage API Implements a storage engine for Field API data.
Field Language API Handles multilingual fields.
Field Info API Obtains information about Field API configuration.
Field Formatter API Define Field API formatter types.
Field CRUD API Creates, updates, and deletes Field API fields, bundles, and instances.
Field Attach API Operates on Field API data attached to Drupal entities.
Field API bulk data deletion Cleans up after Field API bulk deletion operations.
Field API Attaches custom data fields to Drupal entities.
Default theme implementations Functions and templates for the user interface to be implemented by themes.
Database abstraction layer Allow the use of different database servers using the same code base.
Content markers Markers used by theme_mark() and node_mark() to designate content.
Configuration system upgrade functions Module update functions that
Configuration system hooks @todo Overall description of the configuration system.
Callbacks Callback function signatures.
Block Caching Constants that define each block's caching state.
Batch operations Creates and processes batch operations.
Authorized operations Functions to run operations with elevated privileges via authorize.php.
Ajax framework commands Functions to create various Ajax commands.
Ajax framework Functions for Drupal's Ajax framework.

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