Historical clue formulations

• Musical "repeat" mark — 2020-07-10
• Musical mark meaning "repeat" — 2018-04-28
• Score mark indicating a passage to be repeated — 2017-10-21
• Musical repetition mark — 2009-12-22
• Musical repetition mark — 2009-04-19
• Repetition mark, in music — 2008-06-27
• Sheet music symbol — 2004-08-15
• Repetition mark, in music — 2002-04-28
• Musical "repeat" sign — 1994-04-14
• Repeat sign — 1994-01-14