Highlighting options

[uliska]

This is a list of common highlighting functions that we should support as defaults. Taken from: Ulrich Krämer: Skizzenedition, in: Appel/Emans (ed.): Kompendium Musikphilologie, Laaber-Verlag 2017, ISBN:978-3-89007-723-9, page 42:

To be discussed is both the implementation (also regarding the application to different elements types) and the interface/naming scheme.

• editorial addition: square brackets
  This should include clefs (I'm mentioning this because it may cause technical issues in LilyPond), stems, flags, accidentals, time and key signatures, rests, note heads.
• strikethrough, ideally with variable styles
• deletion in source. editorial addition enclosed in angled brackets or printed with small font size
• (sometimes) in corrections the original is printed in small print with an annotation like "ms." (or "[sic!]", this should be configurable).
• Decisions that ask for clarification or further discussion are marked with a "?"
• Uncorrected readings are marked with "!"

Further suggestions by Ulrich Leisinger: "Editorische Maßnahmen: Textkonstitution", same volume, p. 215/16. editorial additions by grob type:

• Notes: smaller font size (NOTE: this has to affect all parts of a note (head, stem, flag, dots, accidentals))
• Ties/Slurs: dashed/dotted. In anglo-saxon editions also: strikethrough (I think this means a small vertical line through the center of the curve)
• markup: italics, more seldomly: small font
• artikulations: small font (hm, I'd also suggest parentheses)
• Accidentals: small font, placement above the staff
• dynamics: italics (when using some sort of upright font in general)
• Coloring (or grey) (which is still used extremely rarely in printed editions)