# Files and folders

> Creating, renaming and deleting files, what a path is allowed to look like, which extensions each project kind accepts, and pairing a Canvas board.

Source: https://www.revquix.com/docs/projects/files-and-folders
Last verified: 2026-09-03

---

The file tree is the whole of a project's structure. There is no hidden config and no build file you
cannot see.

## Creating and renaming

Right-click in the tree, or use the buttons above it. Creating a file and renaming one use the same
dialog, and both ask for a **path** rather than just a name - so typing `utils/format.java` creates
the folder on the way.

Folders are implied by paths. There is no separate "new folder" step, and an empty folder does not
persist, because there is nothing to store.

## What a path may look like

- Letters, digits, dashes, underscores, dots and forward slashes.
- No leading slash, no `..`, no trailing dot.
- Each segment has to be non-empty - `src//main.java` is rejected.

The dialog validates as you type and says which rule failed rather than refusing silently.

## Which files a project accepts

Each kind allows a specific set of extensions, and the server is the authority. A Java project takes
`.java` and a set of data and text files; it does not take `.py`.

> **Note** - Not every allowed file is a runnable one
>
> A project can hold a README, a data file or a header. Those store fine and are not valid Run targets
>
> - Run picks by extension, so pointing it at a `.txt` gets you the stored entry file instead.

## Deleting

Deleting is immediate and there is no recycle bin in the tree. What there is instead is [restore points](https://www.revquix.com/docs/projects/restore-points) - if you delete something
you needed, an earlier working set will still have it.

## Pairing a Canvas board

A project can hold a `.rqd` file, which links a Canvas board to the project.

> **Warning** - A .rqd is a link, not a drawing
>
> It holds no drawing data - it carries a reference to a board that lives in Canvas. Two consequences
> worth knowing: it takes up no meaningful space against your project's byte budget, and it is
> excluded from runs and from what the AI assistant reads. The diagram cannot be a source file, and it
> is not pretending to be one.

Open it and the board opens in Canvas. Delete the `.rqd` and the board is untouched - you have
removed the link, not the diagram.

## What counts against your limits

Source files count toward the byte budget. Binary assets held outside the project's text storage do
not. The exact ceilings are in [project limits](https://www.revquix.com/docs/projects/project-limits).

- [Project limits](https://www.revquix.com/docs/projects/project-limits) - Every ceiling, in one place.

- [Restore points](https://www.revquix.com/docs/projects/restore-points) - Getting back a file you deleted.