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TagSystem
=========
Utility functions for dealing with object tags. This object is available at `System.tags` and shouldn't be instantiated directly.
Functions
---------
#### list
`list()`
Lists all tags used in all objects.
*Returns*
A new [Array](/reference/array) of strings with all tags used in all objects.
#### select
`select(tagName)`
Selects all objects that are tagged `tagName`.
*Arguments*
* `tagName`: string.
*Returns*
A new [Array](/reference/array) of strings with the names of the objects tagged with `tagName`. If there are no such objects, an empty array is returned.
#### tagsOf
`tagsOf(objectName)`
Returns the tags of the objects named `objectName`.
*Available since:* SurgeScript 0.6.0
*Arguments*
* `objectName`: string.
*Returns*
A new [Array](/reference/array) of strings with the names of the tags associated with the objects named `objectName`. If the objects are untagged or do not exist, an empty array is returned.
#### hasTag
`hasTag(objectName, tagName)`
Checks if objects named `objectName` are tagged `tagName`. Prefer using [Object.hasTag()](/reference/object#hastag) if possible.
See also: [Object.hasTag()](/reference/object#hastag).
*Available since:* SurgeScript 0.6.0
*Arguments*
* `objectName`: string.
* `tagName`: string.
*Returns*
Returns `true` if the objects are tagged as specified, or `false` otherwise.
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