# What is a Cell?

A cell is the smallest addressable unit in a RadSpreadProcessing worksheet. Use this article to understand how cells are identified, what information they store, and which related APIs and articles help you start working with them.

## Cell Addresses

A worksheet organizes cells into rows and columns. Each cell sits at the intersection of one row and one column and has a unique address in A1 notation.

For example, `A1` identifies the top-left cell in the worksheet, while `XFD1048576` identifies the last possible cell in an Excel-compatible worksheet. These addresses are useful when you read formulas, reason about ranges, or follow examples elsewhere in the documentation.

When you need to work with a single cell or a range of cells in code, continue with [Accessing Cells of a Worksheet](https://www.telerik.com/document-processing-libraries/documentation/libraries/radspreadprocessing/working-with-cells/accessing-cells-of-worksheet).

## Cell Content and Properties

A cell can hold both data and the settings that control how that data appears. In practice, a cell commonly includes the following parts:

* Value data such as text, numbers, Boolean values, dates, or formulas.
* Formatting such as fonts, number formats, foreground and background colors, bold, italic, and underline.
* Layout settings such as horizontal and vertical alignment, text wrapping, indentation, and text rotation.
* Border and fill settings that control how the cell is outlined and shaded.

Cells can start empty and still carry formatting or other properties. When a cell contains a formula, the stored formula text and the displayed result are not always the same value. For details about supported value types and how the `Value` property behaves, see [Cell Value Types](https://www.telerik.com/document-processing-libraries/documentation/libraries/radspreadprocessing/working-with-cells/cell-value-types).

## Cell Behavior in a Worksheet

Cells participate in worksheet operations that affect one cell, many cells, or an entire range. The most common behaviors include:

* Copying and pasting data, formulas, formatting, or column widths. For more information, see [Clipboard Support](https://www.telerik.com/document-processing-libraries/documentation/libraries/radspreadprocessing/features/clipboard-support).
* Filling neighboring cells automatically with repeated, linear, exponential, date-based, or autofill series. For more information, see [Fill Data Automatically](https://www.telerik.com/document-processing-libraries/documentation/libraries/radspreadprocessing/features/fill-data-automatically/repeat-values).
* Merging adjacent cells into a single visual region and unmerging them later. For more information, see [Merge and Unmerge Cells](https://www.telerik.com/document-processing-libraries/documentation/libraries/radspreadprocessing/features/merge-unmerge-cells).
* Reading, setting, and clearing properties through `CellSelection`, which is the main API surface for working with one cell or many cells together.

This behavior matters because many RadSpreadProcessing APIs work with selections and ranges rather than with a standalone cell object. If your next task is to read or update content, formatting, or other properties, start with [Get, Set and Clear Cell Properties](https://www.telerik.com/document-processing-libraries/documentation/libraries/radspreadprocessing/working-with-cells/get-set-clear-properties).

## Next Steps

Continue with the article that matches your next task:

* [Accessing Cells of a Worksheet](https://www.telerik.com/document-processing-libraries/documentation/libraries/radspreadprocessing/working-with-cells/accessing-cells-of-worksheet)—Access a single cell or a range of cells in code
* [Cell Value Types](https://www.telerik.com/document-processing-libraries/documentation/libraries/radspreadprocessing/working-with-cells/cell-value-types)—Understand supported data types and formula values
* [Get, Set and Clear Cell Properties](https://www.telerik.com/document-processing-libraries/documentation/libraries/radspreadprocessing/working-with-cells/get-set-clear-properties)—Read or update formatting and other cell properties
* [Fill Data Automatically](https://www.telerik.com/document-processing-libraries/documentation/libraries/radspreadprocessing/features/fill-data-automatically/repeat-values)—Populate neighboring cells with repeated or sequential data
* [Merge and Unmerge Cells](https://www.telerik.com/document-processing-libraries/documentation/libraries/radspreadprocessing/features/merge-unmerge-cells)—Combine adjacent cells into a single visual region

## See Also

* [Accessing Cells of a Worksheet](https://www.telerik.com/document-processing-libraries/documentation/libraries/radspreadprocessing/working-with-cells/accessing-cells-of-worksheet)
* [Cell Value Types](https://www.telerik.com/document-processing-libraries/documentation/libraries/radspreadprocessing/working-with-cells/cell-value-types)
* [Get, Set and Clear Cell Properties](https://www.telerik.com/document-processing-libraries/documentation/libraries/radspreadprocessing/working-with-cells/get-set-clear-properties)
* [Clipboard Support](https://www.telerik.com/document-processing-libraries/documentation/libraries/radspreadprocessing/features/clipboard-support)