It seems that Flidas' default is for its windows to have a persistently
visible scroll bar and on-screen arrow buttons at each end of it. I prefer
this to the iOS - style simplified line scrollbar with no arrow buttons that
is the default in Belenos.
However, I prefer a square, Windows 95-2000 or MacOS 9 style squared-off look
to the "thumb" and the ends of the scroll bar.
Also, there seems to be a style inconsistency between the on-screen arrow
buttons in the middle and furthest-back window in the first screenshot; the
middle window has mere rotated "V" style arrows while the furthest-back
window has true arrows.