Historical clue formulations

• Pieces of advice — 2025-12-17
• Tax code issues — 2025-10-26
• Suggestions — 2025-07-29
• Punny reply to "What are you waiting for?" — 2025-02-13
• Bits of advice — 2024-10-16
• Nail salon extensions — 2024-09-15
• Pointers — 2024-05-01
• Label on some jars — 2022-06-19
• Much of a delivery person's income — 2022-03-06
• List in "The Idiot's Guide to ..." — 2022-02-20
• "Read the clues carefully" and "Check your crossing answers" [You're welcome!] — 2021-10-28
• Money left on the table — 2019-11-08
• Pointers — 2019-03-17
• Jar filler — 2019-01-19
• Much of a salon worker's income — 2018-09-03
• Rewards for waiting? — 2018-08-14
• Things waiters wait for — 2018-02-16
• Things worth waiting for? — 2017-10-13
• Word on a jar — 2017-08-27
• Sign on a jar at a bar — 2017-02-19
• Server's bread and butter — 2016-10-21
• Tout's stock-in-trade — 2016-06-30
• Bar jarful — 2014-09-28
• They're often off the books — 2014-02-26
• Things worth waiting for? — 2013-03-02
• Word on a bar worker's jar — 2010-05-11
• Bread in a jar, perhaps — 2009-12-02
• Large part of a waiter's income — 2009-03-23
• A large part of a waitress's income — 2008-12-22
• Edges at the track — 2008-08-17
• A lot of a car valet's income — 2008-03-11
• Much of a waitress's income — 2007-09-18
• Rewards for waiting — 2005-11-15
• Inclines — 2003-10-19
• Service rewards — 2003-09-11
• Server's collection — 2003-05-31
• See 21-Across — 2002-12-13
• Diner jarful — 2002-07-24
• Thanks monetarily — 2001-05-12
• Helpful hints — 2001-05-01
• Peaks — 2000-03-09
• Q followers? — 1999-02-17
• Good things that come to those who wait — 1999-02-05
• Loses verticality — 1998-08-05
• Often underreported income — 1998-02-22
• Pointers — 1997-12-25
• Rewards for waiting — 1997-11-04
• Much of a waiter's income — 1997-04-08
• Manual offerings — 1997-03-20
• Rewards for waiting — 1995-02-12