General problems: Spaces before and after punctuation marks ( . , ; ! ? )

• ​handwritten annotations (cannot be typed in China)
• ​spaces within words ("e cclipses")
• ​catchwords and signatures
• the use of U and V: ​writing v for u ​writing u for v
• ​ligature ß for ∫s
• ​missing hyphens
• ​long citations

• Latin (and Greek) ligatures, for example ​ct (simple ligature) and ​que (complex ligature) (see also here for a longer list)
• ​paper creases
• ​extensive marginal notes and also ​handwritten notes and sketches
• italics: ​single word ​whole paragraph

• Greek ligatures: ​image p.16 (see also here)
• columns (​recto: gr lat, ​verso: lat gr) with "un-synchronized pagebreaks"; sometimes, the columns fill the whole width of the page (see ​here); there are also schematic representations of special cases concerning columns: ​Doublepage columns, ​Column with extended line, ​End of columns text
• ​footnotes (​text at bottom of the page)
• ​Small caps

• ​references to other entries

• Running heads:
  • ​Benedetti
  • ​Euclid (Latin/Greek)
  • ​Euclid (Clavius)

• Page numbers in various places:
  • ​Euclid (Latin)
  • ​Euclid (Latin/ Greek)
  • ​Benedetti

• various hyphens
  • ​Euclid (Clavius): simple
  • ​Euclid (Latin): double, slanted
  • ​Euclid (Latin): simple, slanted

• various footnote symbols

• ornamented and unornamented drop caps
  • ​Benedetti (ornamented)
  • ​Benedetti (unornamented)
  • ​Euclid (Latin) (ornamented)
  • ​Euclid (Greek/ Latin) (unornamented)

• ​Headings and subheadings (different font sizes)

• Paragraph

• <help> tag (creases etc.)

• <gap> tag (unreadable because of ink, holes, tears etc.)

• ​Anchored marginal notes (Euclid (Clavius))
• Images
  • ​between paragraphs
  • ​left
  • ​centre
  • ​right
  • ​left and right
• Punctuation

• ​Fractions