The MetaSound class is defined externally, in compiled code or in another document.
Graph
The MetaSound class is a graph within the containing document.
Input
The MetaSound class is an input into a graph in the containing document.
Output
The MetaSound class is an output from a graph in the containing document.
Literal
The MetaSound class is an literal requiring a literal value to construct.
Variable
The MetaSound class is an variable requiring a literal value to construct.
VariableDeferredAccessor
The MetaSound class accesses variables.
VariableAccessor
The MetaSound class accesses variables.
VariableMutator
The MetaSound class mutates variables.
Template
The MetaSound class is defined only by the Frontend, and associatively performs a functional operation within the given document in a registration/cook step.