The Infoset Pipeline begins
 
  - An XML Parser builds an Infoset from a character stream  - A
streaming parser gives only a limited view of it
 
- A validating parser builds a richer Infoset than a non-validating one
 - Defaulted values
- Whitespace normalisation
- Ignorable
whitespace
 
- If a document isn’t well-formed or isn’t Namespace-conformant  - It
doesn’t have an Infoset!