Step One: First, start Word2013, mouse select XXX, click the menu bar--development tools, click inside the building Block Library button.
Step two: page to generate the document part options, we first ignore it, directly click on the control function area inside the property button.
Step three: Pop up a Content Control Properties dialog box and enter a text message in the general-header: Enter your company name.
Step four: After you click OK, we can enter the company name in the base Block library, as shown in the following figure. The mouse moves here, there will be text prompts.