> For the complete documentation index, see [llms.txt](https://help.brieftech.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.brieftech.ai/reference/column-options.md). # Column options {% hint style="info" %} **Scope:** These options are for the **Document Index** — the table used to build and export your list of documents. To show, hide, or reorder the columns in the on-screen document list on the Files and Review tabs, see [Customise the file-list columns](/how-to-guides/review/customize-file-list-columns.md). {% endhint %} The Document Index is a table. You choose which columns appear from the columns button in the toolbar above the index, which opens a panel headed **Customize Columns**. The **Description of Document** column is always shown and cannot be removed; every other column can be switched on or off. Columns always appear in a fixed order — switching a column on adds it in its standard position, and that order cannot be changed. By default a new Document Index shows **S/No.**, **Date**, **Description of Document**, **Vol**, and **Page**. ## Available columns | Column | Default heading | Contents | | ------------- | ----------------------- | ------------------------------------------------ | | Serial number | S/No. | The running serial number of the document. | | File name | File Name | The document's file name. | | Date | Date | The document date. | | Description | Description of Document | The document description. | | LOD reference | LOD Ref | A reference code carried over from a source LOD. | | AB reference | AB Ref | A secondary (agreed bundle) reference code. | | Volume | Vol | The bundle volume the document falls in. | | Page | Page | The document's page reference within the bundle. | ## Per-column settings The **Customize Columns** panel controls which columns appear, and lets you rename one — click the pencil button beside a column in the list. The width and alignment settings are not in that panel. To reach those, hover over a column heading in the Document Index itself: a rename icon appears at the right of the heading. Click it to open the **Column Settings** popup for that column. | Setting | Where to set it | Description | | ---------------- | ---------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Header label | The **Column Settings** popup, or the pencil button in **Customize Columns** | Override the default column heading. A heading typed in the **Column Settings** popup is limited to 40 characters; the rename box in **Customize Columns** does not enforce that limit. | | Column Width (%) | The **Column Settings** popup, or by dragging | Set the column width as a percentage of the table, from 5% to 60%. This setting is not available for the **Description of Document** column, which always fills the remaining width automatically. | | Alignment | The **Column Settings** popup | Align the column content left, center, or right. | To set a width by dragging, drag the edge of the column heading that faces the **Description of Document** column — the right edge for columns to its left, the left edge for columns to its right. Dragging keeps to the same 5%–60% range. The **Description of Document** column cannot be dragged. The **Column Settings** popup on the **S/No.** column also carries **Custom Initial** and **Initial Serial Number**, and the popup on the **Date** column carries the **Date Format Preset**. These apply to the whole index, not to that column alone. Applying an index preset replaces the per-column settings above for every column — see [Document Index presets](/reference/index-presets.md). ## Related
Serial numbers and date formatsSerial numbering options, date format presets, and sort order for the Document Index./pages/KN2LgxNA7iMxtRv0vVU2
Export formats and optionsOutput formats and the settings for exporting the Document Index./pages/dLT5HBp622x4XC6CGxhS
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