SoQtRenderArea(3) on Linux
The text 1f7c6eca5401, as Debian 9 (Stretch) shipped it. The page shows this text now.
The SoQtRenderArea class adds scenegraph handling and event management. The SoQtRenderArea class is a component that adds scenegraph management and input device event handling to the SoQtGLWidget component.