Related Clues:

• Editors remove them
• Copy editor’s catches
• 17-Across targets
• Errors like "yhis"
• Proofreading finds
• Keying errors dame made from form, for example
• Proofer’s catches
• Jam for ham and beer for beef
• Unwanted autocorrections
• Errors in documents
• This clu has twu
• "Thiis" and "thaat"