Have you ever been working on a Word document, placed the insertion point mid sentence and started to type only to discover that existing text is being erased? The problem is that you have accidentally hit the Insert key. This places Word in Overtype mode. When you insert new text, it overwrites existing text as you type.

If you frequently hit the Insert key by accident, you can easily disable Overtype mode so it can not be enabled, regardless of whether you press the Insert key. To do so in Word 2003:

  1. Within Word, click the Tools menu and click Options.
  2. Click the Edit tab.
  3. Click the Overtype mode option to clear the check box.
  4. Click OK.