Clue: Lines in some grids: Abbr.

Answer: STS

Length: 3

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Similar Clues:

• Inset grids: Abbr. (STS with 3 letters)
• Increase in speed: Abbr. (ACC with 3 letters)
• Invoice abbr. (e.g. ACCT with 4 letters)
• Insurer's file: Abbr. (ACCT with 4 letters)
• Info on a personal check: Abbr. (ACCTNO with 6 letters)
• Check info (abbr.) (ACCTNO with 6 letters)
• Bank info: Abbr. (ACCTNO with 6 letters)
• They may generate interest: Abbr. (ACCTS with 5 letters)
• Some windows installations: Abbr. (ACS with 3 letters)
• 1990 bill that increased wheelchair access: Abbr. (ADA with 3 letters)