qt4-doc - 4:4.8.7+dfsg-18+deb10u1 main

Qt is a cross-platform C++ application framework. Qt's primary feature
is its rich set of widgets that provide standard GUI functionality.
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This package contains the complete Qt 4 API documentation (new help format).
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The documentation is provided in the new help format and manpage format;
the new help format version can be viewed in conjunction with the Qt Assistant
found in the qt4-dev-tools package.