Display column letters and row numbers

Row numbers and column letters were displayed, but they have disappeared and I can’t figure out how to get t hem back.

In which application? Writer, Calc or Impress? You tagged common, we can’t tell. All three have tables.

Edit your question to improve it. Add your OS name and LO version.

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I guess that this question must be about Calc.

Try menu selection View - Column/Row headers