An index is a list of important terms or topics with their corresponding page numbers, usually placed at the end of a document. In Microsoft Word, entries can be marked manually or generated automatically, and the index can be updated dynamically.
Key Features
- Dynamic Updates: The index updates only when you refresh fields (F9 or Update Field).
- Customizable Entries: Include main entries, subentries, and cross-references to related terms.
- Flexible Formatting: Customize the index’s appearance, such as column layout or font style.
- Navigational Aid: Helps readers find information quickly in long documents.
Example: Create an index in a technical manual listing terms like “installation” and “troubleshooting” with page references.
Steps to Create and Manage an Index
Step 1: Mark Index Entries
Select Text to Mark:
- Highlight the word or phrase you want to include in the index (e.g., “Introduction” or “Data Analysis”).
- Go to References > Index group > Mark Entry (or press Alt+Shift+X).

Configure the Entry:
- In the Mark Index Entry dialog box:
- Main entry: The selected text appears; edit if needed.
- Subentry: Add a subtopic (e.g., “Chart Types” under “Data Analysis”).
- Cross-reference: Link to a related term (e.g., “See also Graphs”).
- Options: Choose Current page, Page range (with a bookmark), or Cross-reference.
- Page number format: Select bold or italic for page numbers (optional).
- Click Mark to mark the selected instance or Mark All to mark all instances of the term in the document.

- Repeat for other terms; close the dialog when done.

- Note: Marked entries appear as hidden fields (e.g., {XE “Introduction”}); enable Show/Hide (Home > ¶) to view them.
Step 2: Insert the Index
Add the Index:
- Place the cursor where you want the index (typically at the document’s end).
- Go to References > Index group > Insert Index.

- In the Index dialog box:
- Type: Choose Indented (subentries indented) or Run-in (subentries in-line).
- Columns: Select the number of columns (e.g., 2 for a compact layout).
- Formats: Choose a style (e.g., Classic, Modern) for the index’s appearance.
- Align page numbers: Check to right-align page numbers; add a tab leader (e.g., dots) for clarity.

- Click OK to insert the index.

Step 3: Update the Index
Refresh the Index:
- Right-click the index and select Update Field.
- Choose Update entire index (Changing layout or font) or Update page numbers only if only page numbers have changed.
- Alternatively, press Ctrl+A, then F9 to update all fields, including the index.

Add or Remove Entries:
- Mark additional entries using Mark Entry and update the index.
- To remove an entry, locate its field (e.g., {XE “Term”}) with Show delete it, and update the index.

- Example: Add a new entry for “Conclusion” and update the index to include it.

Step 4: Format the Index
Customize Appearance:
- Select the index.
- Use Home > Font or Paragraph to adjust font type, size, color, or spacing to match the document.
- Modify the index style via References > Insert Index > Formats to change the overall look.

Adjust Layout:
- Change the number of columns or tab leader in the Index dialog box.
- Use Paragraph settings to adjust line spacing or indentation.