Where the name of this software comes from
In bookbinding, a section, gathering, or signature is a group of sheets folded in half, to be worked into the binding as a unit.
Notes
The reed, before the steel nib
A reed pen or bamboo pen is a writing implement made by cutting and shaping a single reed straw or length of bamboo.
Insular half-uncial: where to look
The Book of Kells is an illustrated manuscript and Celtic Gospel book in Latin, containing the four Gospels of the New Testament together with various prefatory texts and tables.