# Extend Cypher - User Defined Procedures

  - User Defined Procedures
  - 80:20 high performance operations
  - Methods annotated with @Procedure, @UserFunction (>= 3.1), @UserAggregateFunction (>= 3.2)
  - Procedures Returns Stream of DTOs
  - Automatic Transaction Scope
  - Callable within Cypher
  - Deploy jar in $NEO4J_HOME/plugins directory
  - User of embedded Java APIs