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The Sky Environment
===================
The main files loaded by the Sky environment are Sky files, though
they can refer to binary resources like images and fonts.
Sky files
---------
Conventional MIME type: ``text/sky``, though this type is neither
necessary nor sufficient to indicate that a file is a Sky file; only
the signature matters for type dispatch of Sky files.
Conventional extension: ``.sky``
Signatures:
For application files, one of the following:
* ``23 21 6d 6f 6a 6f 20 6d 6f 6a 6f 3a 73 6b 79 0a`` ("``#!mojo mojo:sky\n``")
* ``23 21 6d 6f 6a 6f 20 6d 6f 6a 6f 3a 73 6b 79 0d`` ("``#!mojo mojo:sky\r``")
* ``23 21 6d 6f 6a 6f 20 6d 6f 6a 6f 3a 73 6b 79 20`` ("``#!mojo mojo:sky ``")
For module files, one of the following:
* ``53 4b 59 20 4d 4f 44 55 4c 45 0a`` ("``SKY MODULE\n``")
* ``53 4b 59 20 4d 4f 44 55 4c 45 0d`` ("``SKY MODULE\r``")
* ``53 4b 59 20 4d 4f 44 55 4c 45 20`` ("``SKY MODULE ``")
Notes
-----
```
magical imports:
the mojo fabric API dart:mojo
the mojom for the shell, proxying through C++ so that the shell pipe isn't exposed dart:mojo-shell
the Sky API dart:sky
```