# phpman > ri > Psych::Emitter

## [Psych::Emitter](https://www.chedong.com/phpMan.php/perldoc/Psych%3A%3AEmitter/markdown) < [Psych::Handler](https://www.chedong.com/phpMan.php/perldoc/Psych%3A%3AHandler/markdown)

(from gem psych-5.4.0)
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## Class methods:

  new

## Instance methods:

  alias
  canonical
  canonical=
  end_document
  end_mapping
  end_sequence
  end_stream
  indentation
  indentation=
  line_width
  line_width=
  scalar
  start_document
  start_mapping
  start_sequence
  start_stream