MS Word lets you add an index to any document regardless of its length, style or subject matter.
 This button is on the MS Word toolbar at the top of your screen next to other tabs like Home, Insert, and Review. It will open the References toolbar at the top of your Word window., This button looks like a blank page icon with a green arrow and a red line on it. It is located between Insert Caption and Mark Citation on the References toolbar towards the upper-right corner of your screen. Clicking on it will open a dialogue box titled Mark Index Entry to select important terms and phrases for your index., Double-click on a word with your mouse, or use your keyboard to highlight it., The term you just selected in your document will now appear in the text field next to Main entry.

Optionally, you can enter a subentry, or a cross-reference to accompany the main index entry. Subentries and cross references will be listed under their corresponding main entries in your index.
You can also add a third-level entry by entering a subentry text in the Subentry field followed by a colon (:), and then typing the text of your third-level entry.
 Under the heading Page number format, select the corresponding checkbox if you want your index page numbers in bold or italic., Select the text in the Main entry or Subentry field, right-click, and click Font. This will open a new dialogue box where you can customize the font style, size, color, and text effects, as well advanced options like character scale, spacing, and position.

If you want to learn more about formatting fonts in Word, This article will show you different font and character options that you can use in any Word document.
 This button will mark the highlighted term and add it to your index with the corresponding page number., This button will search the entire document for your index entry, and mark every instance it is mentioned., Highlight another term in your document and click on the Mark Index Entry box. Your new term will now appear in the Main entry field. You can customize all subentry, cross-reference, page number, and font formatting options for your new index entry in the Mark Index Entry dialogue box.,, This button is on the MS Word toolbar at the top of your screen., This button looks like the bottom half of a page above the top half of another page. It will end your previous page and start a new one., It’s on the MS Word toolbar at the top of your screen., This button is located next to the Mark Entry button on the References toolbar. It will open a dialogue box titled Index., You will choose from Indented and Run-in. An indented index will be easier to navigate for readers, whereas a run-in index will take up much less space on the page.

You will be able to preview all different types and formats in the Print Preview box as you customize your index.
 You can customize your index by selecting a design from the available format presets.

You can also create your own design by selecting From template, and clicking the Modify button. This will let you customize fonts, spacing, and style for all entries and subentries to create your own design format.
You can preview different format designs in the Preview box before you decide.
 You can increase the number of columns in the Columns box to take up less space, or you can set the number of columns to Auto., This will create an index page with all of your marked entries and their corresponding page numbers. You can use this index to look up the pages where important terms and concepts are mentioned throughout your document.
Open a Microsoft Word document.
Click the References tab.
Click the Mark Entry button.
Select a word or a group of words for your index.
Click on the Mark Index Entry dialogue box.
Format the page numbers in your index.
Format the text for your index entry.
Click Mark.
Click Mark All.
Select another word or group of words to mark.Scroll down and click on the bottom of the last page.
Click the Insert tab.
Click the Page Break button on the Insert toolbar.
Click the References tab.
Click Insert Index.
Select your index type.
Select an index design from Formats.
Change the number of columns.
Click OK.
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