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https://github.com/ppasupat/a9

a9 — a web-based note-taking application
https://github.com/ppasupat/a9

because-evernote-cannot-latex hieda-no markdown

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a9 — a web-based note-taking application

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# a9



**a9** is an Evernote-style note-taking application.



***UPDATE: [a9 VERSION 2 AVAILABLE HERE](https://github.com/ppasupat/a9v2)***



## Features



With a9, you can ...



* edit and preview a [Markdown](http://daringfireball.net/projects/markdown/) document at the same time

* save the document in Markdown format, which can be opened directly by other editors

* export the document and view it in the viewer

* organize documents into "books" like in [Evernote](https://evernote.com/)

* print documents in full-page format

* customize styling by editing the CSS files

* insert LaTeX formulas using `$..$` and `$$..$$` — the equations will be displayed using [MathJax](http://www.mathjax.org/)

* draw simple graphics (like graphical models) with special SVG hacks (to be documented)



The documents are saved locally.

To sync or back up the documents, use [an existing sync or backup service](http://alternativeto.net/category/backup-and-sync/).

I put it in my [Dropbox](https://www.dropbox.com/).



## Screenshot



![a9 screenshot](/../screenshot/static/images/screenshot.png?raw=true "a9 screenshot")



## Requirements



Python 2.7 and a modern browser (i.e., not IE <= 8)



## Setup



Run `a9-server.py` either by double-clicking the icon or invoking through a terminal.



## Keyboard Shortcuts



Keyboard shortcuts can be modified in `static/main.js` 



| Key | Command |

| --- | ------- |

| **— Document —** | |

| Ctrl-S | Save |

| Ctrl-Q | Preview (without saving) |

| Shift-Ctrl-S | Export |

| **— Edit —** | |

| Ctrl-Z | Undo |

| Ctrl-Y **or** Shift-Ctrl-Z | Redo |

| Ctrl-X | Cut |

| Ctrl-C | Copy |

| Ctrl-V | Paste |

| Ctrl-D | Delete Line |

| **— Format —** | |

| Ctrl-B | Bold: `x` → `**x**` |

| Ctrl-I | Italic: `x` → `_x_` |

| Ctrl-L | Plain Link: `x` → `` |

| Ctrl-/ | Labeled Link: `x` → `[x]()` |

| Ctrl-\` | Code: `x` → \`x\` |

| Ctrl-^ **or** Ctrl-. | Superscript: `x` → `x` |

| Ctrl-\_ **or** Ctrl-,| Subscript: `x` → `x` |

| Shift-Ctrl-B **or** Ctrl-\* | Apply bullets on selected text |

| Ctrl-] **or** Tab | Indent More |

| Ctrl-[ **or** Shift-Tab | Indent Less |

| Ctrl-Alt-[0-5] | Add Pinyin Tone: lv → lv/lǖ/lǘ/lǚ/lǜ/lü |

| **— Insert —** | |

| Ctrl-H | Insert Horizontal Line |

| Alt-/ | Auto-complete1 |

| Ctrl-A | Insert Symbol2 |

| Ctrl-' | Insert Citation |



1 Based on words in the same document



2 See `static/alchemy.js`. For example, entering `inf` gives ∞.