Topics - 7.x - drupal

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Title Summary
Actions Functions that perform an action on a certain system object.
Ajax framework Functions for Drupal's Ajax framework.
Ajax framework commands Functions to create various Ajax commands.
Authorized operations Functions to run operations with elevated privileges via authorize.php.
Batch operations Creates and processes batch operations.
Block Caching Constants that define each block's caching state.
Callbacks Callback function signatures.
Content markers Markers used by theme_mark() and node_mark() to designate content.
Database abstraction layer Allow the use of different database servers using the same code base.
Field API Attach custom data fields to Drupal entities.
Field Attach API Operate on Field API data attached to Drupal entities.
Field CRUD API Create, update, and delete Field API fields, bundles, and instances.
Field Formatter API Define Field API formatter types.
Field Info API Obtain information about Field API configuration.
Field Language API Handling of multilingual fields.
Field API bulk data deletion Clean up after Field API bulk deletion operations.
Field Storage API Implement a storage engine for Field API data.
Field Types API Define field types.
Field Widget API Define Field API widget types.
File interface Common file handling functions.
File module public API functions These functions may be used to determine if and where a file is in use.
Formatting Functions to format numbers, strings, dates, etc.
Form builder functions Functions that build an abstract representation of a HTML form.
Form generation Functions to enable the processing and display of HTML forms.
Hooks Allow modules to interact with the Drupal core.
HTTP handling Functions to properly handle HTTP responses.
Image toolkits Functions for image file manipulations.
Language Negotiation API functionality Functions to customize the language types and the negotiation process.
Language addition API Add a language.
Translation import/export API. Functions to import and export translations.
List of predefined languages API to provide a list of predefined languages.
Translation search API Functions to search in translation files.
Automatic interface translation import Functions to create batches for importing translations.
Language administration interface Administration interface for languages.
Language negotiation options Functions for language negotiation.
Translation administration screens Screens for translation administration.
Translation editing/deletion interface Edit and delete translation strings.
Locking mechanisms Functions to coordinate long-running operations across requests.
Logging severity levels Logging severity levels as defined in RFC 3164.
Menu system Define the navigation menus, and route page requests to code based on URLs.
Menu context types Flags for use in the "context" attribute of menu router items.
Menu flags Flags for use in the "type" attribute of menu items.
Menu item types Definitions for various menu item types.
Menu status codes Status codes for menu callbacks.
Menu tree parameters Parameters for a menu tree.
Node access rights The node access system determines who can do what to which nodes.
Node API Hooks Functions to define and modify content types.
Hook implementations for user-created content types Functions that implement hooks for user-created content types.
Pager pieces Theme functions for customizing pager elements.
PHP wrapper functions Functions that are wrappers or custom implementations of PHP functions.

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