Man page - spectrogramscreenshots(3) Packages contains this manual Package: libqwt-doc apt-get install libqwt-doc Manuals in package: otherscreenshots(3) qwtlicense(3) qwtchangelog(3) qwtinstall(3) curvescreenshots(3) controlscreenshots(3) spectrogramscreenshots(3) barchartscreenshots(3) Documentations in package: libqwt-doc Manual spectrogramscreenshots NAME NAME spectrogramscreenshots - Spectrogram, Contour Plot