Once you’ve made a document in Microsoft Word, you can split it into multiple documents within the Word file. The name for these is “subdocuments.” One subdocument can even be split into more than one subdocument. To split a Word file into multiple subdocuments, you need to use commands that may not be available right away when you open the file. To find the commands you need, you need to open a few more toolbars in the program.
Go to the “View” menu and open the Word document. Choose “Outline,” which will open a new toolbar in the program, and put small boxes before each paragraph.
Click on the box next to the first paragraph of text to make it stand out, then go to the Style list in the formatting palette and give it a heading. Do this for the first paragraph of each subdocument you want to make, giving each one the same heading.
Click the number icon in the Outline toolbar that matches the heading you gave each subdocument (click “1” if you assigned Heading 1). This will make the headings of each subdocument smaller, giving you more room to work.
Click the Master Document icon at the end of the Outline toolbar. This will open the Master Document icon above the Outline icon.
Click on the “plus” sign next to each heading. This is where the box used to be. To turn the text into one subdocument, click the “Create Subdocument” icon on the Master Document toolbar. It looks like a bigger document with a smaller one inside it.
If you want to split the subdocument into two separate documents, click the subdocument icon in the top-left corner of the subdocument. This turns on the icon that looks like a document that has been torn in half.
Click on the “Split” icon, then click on the paragraph that will start the second of the split subdocuments.