By default the following Qt APIs are always available:
QT5: The QT 5.12 API
QT4.8: The QT 4.8 API
QtAPIs property
The "APIs" property specifies an XML file defining a list of APIs. See APIs.xsd for the APIs Schema. Thei file allows to specify a list of APIs, and for each API:
Its URL
Its ID
Note that other kinds of APIs can be specified in this file, see APIs property for more information.
The validity and existence of qtdoc tags will only be checked if the "checkLinks" property is set to true.
See also
APIs property: Configure how to access external APIs and wikis
Configuration file: It is possible to define an optional property / value configuration file when starting the application (using the graphical UI or the command line)