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---
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# Projections
Projections are a way to define relations between files. Every file can have a
"related" or "alternate" file. It's common to consider spec files to be
"alternate" files to source files.
## How to use it
- Install an editor plugin that consumes projections
- Copy `.projections.json.example` to `.projections.json`
## How to customize it
You can find a basic list of projection options in
[projectionist.txt ](https://github.com/tpope/vim-projectionist/blob/master/doc/projectionist.txt )
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## Which plugins can you use
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- vim
- [vim-projectionist ](https://github.com/tpope/vim-projectionist )
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- VS Code
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- [Alternate File ](https://marketplace.visualstudio.com/items?itemName=will-wow.vscode-alternate-file )
- [projectionist ](https://github.com/jarsen/projectionist )
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- [`jumpto` ](https://github.com/gmdayley/jumpto )
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- Atom
- [projectionist-atom ](https://atom.io/packages/projectionist-atom )
- Command-line
- [projectionist ](https://github.com/glittershark/projectionist )
## History
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This started as a
[plugin for vim by tpope ](https://github.com/tpope/vim-projectionist )
It has since become editor-agnostic and ported to most modern editors.
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