> For the complete documentation index, see [llms.txt](https://help.taglo.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.taglo.io/layout/sheets/sheet-content.md).

# Sheet Content

## Line Groups and Line Items

[**Variables**](/variables/variable-basics.md), [**Assumptions**](/assumptions/introduction-to-assumptions.md) and [**Metrics**](/metrics/metrics.md) are all added to Sheets via [**Line Groups**](#line-groups) and [**Line Items**](#line-items).

<figure><img src="/files/YruCYuyB20sChB2bIZjN" alt=""><figcaption><p>Line Groups and Line Items in Models (left) and Excel (right)</p></figcaption></figure>

### Line Items

All Variables, Assumptions and Metrics in your Layout are represented by a Line Item. As shown in the screenshot above, when a Variable or Metric has a [**Dimension**](/dimensions/introduction-to-dimensions.md) applied (the Variable `Gym members` in the example), you only need to add a single item to the Layout for all child items, and the summary line, to be generated in the Excel.

### Line Groups

Each [**Line Item**](#line-items) must be a child of a **Line Group**. Line Groups can be added to other Line Groups in a tree-like structure, and numbering will be automatically added, as in the example screenshots above.

## Dashboards

`Dashboard` Sheets contain a reference to a single [**Dashboard**](/dashboards/dashboards-basics.md). In the [**Sheet wizard**](/layout/sheets.md#sheet-setup-step), if you select the `Dashboard` Sheet type, you will be shown a step in which you can choose a Dashboard to display. Only one Dashboard can be shown on any single Sheet.