Class:

May be included in:

div, grammar, include.

XML syntax equivalent:

start

Description:

The start pattern defines the "start" of a grammar. When this grammar is used to validate a complete document, the start pattern defines which elements may be used as the document (root) element. When this grammar is embedded within another grammar, the start pattern describes which pattern should be applied at the location where the grammar is embedded. Like named pattern definitions, start patterns may be combined by choice or interleave and redefined when they are included in include patterns.

The combination is defined by the assignMethod which may take the values: " =" (definition), " &=" (combination by interleave), or " |=" (combination by choice).

Example:

  start = element library {
   book-element +
  }
 
  start |= book-element