Pointed shapes visible in strobe lighting

• Г· symbols
• Having to remain in back, I look daggers
• Editorial marks on old manuscripts
• Dagger-shaped editing marks
• Book marks, one found after prize-giver’s heading off
• Marks in ancient manuscripts
• Ancient reference marks
• Daggers, in footnotes
• Ancient critical printing marks

Wiktionary Word definitions in Wiktionary
n. (plural of obelus English)