> ## Documentation Index
> Fetch the complete documentation index at: https://docs.bedrock.cv/llms.txt
> Use this file to discover all available pages before exploring further.

# Sheets

> Individual pages extracted from drawings.

A Sheet is a single page extracted from a [Drawing](/guides/concepts/drawings). Sheets are identified by their **sheet number** (e.g., A-101, E-201, S-301), which Bedrock extracts from the title block.

## Disciplines

The discipline prefix in the sheet number tells you the trade:

| Prefix | Discipline      |
| ------ | --------------- |
| A      | Architectural   |
| S      | Structural      |
| M      | Mechanical      |
| E      | Electrical      |
| P      | Plumbing        |
| FP     | Fire Protection |
| C      | Civil           |
| L      | Landscape       |
| G      | General         |