QwtPlotMultiBarChart(3) on Linux
The text f9c1ca82d6a6, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster) shipped it. The page shows this text now.
QwtPlotMultiBarChart displays a series of a samples that consist each of a set of values.