# Method Standards.PEM.build()

Method build

  `string build(string tag, string data, void|mapping(string:string) headers, void|string checksum)`

Description

  Creates a PEM message, wrapped to 64 character lines.

Parameter `tag`

  The encapsulation boundary string.

Parameter `data`

  The data to be encapsulated.

Parameter `headers`

  Optional mapping containing encapsulated headers as name value pairs.

Parameter `checksum`

  Optional checksum string, added as per RFC4880.