In MycorrhizaWiki **mycelia** are used to organize [hyphae](hyphae) in related namespaces.

## Mycelium traits
- Every mycelium has any number (0..∞) of hyphae.
- Every hypha is part of one mycelium.
- Every mycelium has one canonical name and any number of synonyms.
- Every wiki has one main mycelium.
- They are named by the same scheme as hyphae but they have a colon prefix.

## Mycelium URL
- Address a hypha in a particular mycelium: `/:sys/about`.
- Address subpage of the hypha above: `/:sys/about/more`
- Address a hypha in the main mycelium: `/How/does it work`.
- Address a hypha in the main mycelium explicitly: `/:main/How/does it work`.

## Mycelium configuration
In your `config.json`, in `"mycelia"` field there is an array of objects.

```
{
	...
	"mycelia": [
		{
			"names": ["main"],
			"type": "main"
		},
		{
			"names": ["sys", "system"], 
			"type": "system"
		},
		{
			"names": ["spec", "special"], 
			"type": "special"
		},
		{
			"names": ["user","u"], 
			"type": "user" 
		}, 
		{ 
			"names": ["tag", "t"], 
			"type": "tag" 
		}
	]
	...
}
```

Each object reprents a mycelium. You can set all their names there. First name in each `"names"` array is a canonical name for the mycelium.

Field `"type"` sets the mycelium's type. There are such types:

| **Type** | **Description** |
| `main`   | The main mycelium. There must be exactly one such mycelium in a wiki. |
| `system` | Things like scripts, styles and templates go here. There must be exactly one such mycelium in a wiki. |
| `special` | Things like utility hyphae and plugin pages go here. It is optional because there are no hyphae or plugins now. |
| `user` | Userpages. It is optional because there are no users now. |
| `tag` | Pages describing tags. It is optional because there are no tags now. |
| `other` | Mycelia without any additional meaning added by the engine. There can be any number of them. |

## How are they stored in the filesystem.
For example, `wiki` is your wiki directory and you have configured the mycelia like in the example above. You should have structure like that:

```
wiki/
	config.json	← your configuration
	favicon.ico	← your site icon
	main/	← :main, <empty prefix>
		...most of content goes here
	sys/	← :sys
		...themes go here
	spec/	← :spec
		...something goes here
	user/	← :user, :u
		...user pages go here
	tag/	← :tag, :t
		...pages describing tags go here
```

There are usual hypha directories inside those mycelial directories.

## Code
- Things related to reading the `config.json` go to the `cfg` module.
- Most of code related to mycelia is in the `fs` module.
- And also check out `handlers.go` and `main.go` for routing of mycelia.