DVT e Language IDE User Guide
Rev. 19.1.34, 11 October 2019
NOTE: Integration with external documentation is not available by default in DVT distributions. You have to install the feature by following this procedure: https://www.dvteclipse.com/install_update_site.html. At step #4 make sure you have checked the Help Plugins.
NOTE: DVT doesn't ship with 3rd party documentation, if it is not in the public domain (for example doxygen docs are public).
Assuming you have the documentation installed, configure the path to it from menu Window > Preferences > Help: