When you open the Word 2010 document window, the default text entry status is the insert State, which means that the original text moves to the right when you enter text on the left side of the original text. There is also a text input state is "overwrite" state, that is, the original text to the left of the text, the original text will be replaced. Users can switch between "insert" and "overwrite" in the Word 2010 document window as needed, as described in the following procedure:
Step 1th, open the Word 2010 document window, and click the file → options button, as shown in Figure 2009121401.
Figure 2009121401 Click the Options button
Step 2nd, in the Open Word Options dialog box, switch to the Advanced tab, and then in the Edit Options area, select the Use overtype mode check box, and then click OK to switch to overtype mode. If you cancel the Use Overtype mode check box and click OK, switch to insert mode, as shown in Figure 2009121402.
Figure 2009121402 Selecting the Use overtype mode check box
By default, the the use Insert Control overtype mode check box in the Word Options dialog box allows you to toggle insert and overwrite status by pressing the INSERT key on your keyboard, or you can click the Insert or Overwrite button in the status bar of the Word 2010 document window to toggle the input state. As shown in Figure 2009121403.
Figure 2009121403 Click the Insert or Overwrite button