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Overview

Type @ in the message box and a picker opens with everything the agent can work from: the built-in design standards library (building codes) and your files (everything in your Files area). Tagging beats re-uploading: the agent gets the exact document and your message stays readable. The picker has two sections, and they’re different things:

Standards: the code library

Built-in design codes (ACI, AISC, ASCE, and your region’s codes), shown in green. Filtered by your design standard selector: with US selected, you see the US codes.

Files: your documents

Your own drawings, specs, spreadsheets, and folders from the Files area, shown in purple. Browse into folders like a file manager.
Not to be confused with your Standards folder. The green Standards section is the built-in library of published design codes. Your own Standards folder (company templates and formatting references) lives in the Files section, and the Formatting standards toggle in the + menu points the agent at it automatically.

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Using the picker

1

Type @ in the message box

The picker opens on the Standards section, showing design codes matched to your selected design standard:
The @ picker showing the Standards section with US design codes listed in green
2

Arrow keys move you around

  • ↑ / ↓ move the selection.
  • → switches from Standards to Files, and drills into a selected folder.
  • ← backs out again.
The @ picker showing the Files section: projects, documents, and uploads folders with file counts
3

Or type to search

Keep typing after the @ and the picker searches the current section, including inside subfolders, with the folder path shown next to each match.
4

Press Enter to tag it

The selection becomes a colored chip in your message: green for standards, purple for files and folders. Add as many as you need, and press Backspace on a chip to remove the whole thing in one keystroke.

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Tagging a whole folder

Select a folder and press Enter instead of drilling into it. The agent gets the folder’s contents. Use this when the task spans a document set:
Example
@Skyline_Tower_Drawings Compare the column schedule against the
foundation plan and list any mismatched sizes.

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When to @, when to attach

SituationDo this
The file is already in your Files area@ it. No re-upload, no duplicate copies.
The file is on your computer, not uploaded yetAttach it: + button, drag and drop, or paste (how).
You need a design code clause@ it from the Standards section, or name the code in your prompt.
The whole project folder matters@ the folder itself.
Attachments become @-able. Anything you attach is saved into your Files automatically, so next conversation you tag it instead of hunting for the file again. See File Management for where attachments land.

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Next steps

Using the Chat Input

The rest of the message box: uploads, dictation, shortcuts.

File Management

How your Files area is organized and where attachments go.

Your Standards Folder

Company templates the agent follows automatically.

Generate RFIs & RFAs

A real workflow built on @-tagging drawings.
Questions? Email support@stru.ai or book a call.