Remove -z flag from paperconf
Simplify exit logic.
Remove a redundant assignment.
Simplify slightly.
Make whitespace consistent.
Don't print unit name with dimensions
Explain better what happens when no paper size is specified.
Specify that we mean PostScript points.
Remove information that is out of date and should not affect users anyway.
Remove all units but pt, mm, in (i.e. points, and those in which paper sizes are actually given).
Make unit mandatory in paper specs.

Rewrite all specs in natural units.

Remove "Quarto" size, as quarto is not a well-defined paper name, and
this one did not appear to refer to any known paper size.
Don't allow comments in paperspecs.