Screenshots of Yav's FKiSS viewer for X-Windows (version 0.33a)

Opening a set with several CNF files: the selection window, next to the shell window where the set has just been opened from the command line.

An opened set, the window resized with the mouse to make room for all the page/palette buttons.

The second screen you see after clicking the question mark.

Though the viewer is supposed to be FKiSS2.1-capable, version(3) produces a warning cel.