Historical clue formulations

• Manuscript marks — 2026-08-01
• Division signs, more formally — 2026-01-11
• Daggerlike symbols on manuscripts — 2025-07-24
• ÷ symbols, in typography — 2021-07-04
• Division signs — 2019-11-16
• Division signs — 2013-11-20
• Printing daggers — 2012-06-06
• Manuscript marks noting possible errors — 2009-03-22
• Symbols marking spurious passages in old manuscripts — 2005-12-04
• Division symbols — 2002-11-19
• Old manuscript marks — 1998-11-01
• Daggers, in printing — 1997-01-12
• Printer's daggers — 1995-01-29