When you open the Word2010 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" states as needed in the Word2010 document window, as described in the following steps:
Step 1th, open the Word2010 document window, and click the file → options button, as shown in Figure 1.
Figure 1 Click the 2nd step of the Options button, switch to the Advanced tab in the Open Word Options dialog box, select the Use overtype mode check box in the Edit Options area, and 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 2.
Figure 2 Select the Use overtype mode checkbox 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 Insert or in the status bar of the Word2010 document window. Overwrite button to toggle the input state, as shown in the figure.
Figure 3 Click the Insert or Overwrite button