Composite Opcodes

The composite opcodes combine multiple operations into higher-level constructs. These opcodes enable conditional logic, function composition, subject manipulation, and computation dispatch, which are affordances necessary for practical programming in Nock.

Opcode	Name	Signature	Purpose
6	If	[6 b c d]	Conditional branch
7	Compose	[7 b c]	Sequential/pipe
8	Extend	[8 b c]	Pin to subject
9	Invoke	[9 b c]	Core arm call
11	Hint	[11 b c]/[11 [b c] d]	Interpreter hint