In Composer any simulation is assembled from a set of nodes. Any node represents some kind of mathematical expression.  This reference is a detailed description of all nodes implemented in the Composer. The nodes have been grouped into the following categories:

Composer Basics 

Most common expressions, warnings and controls of the simulation 

Quantum Basics
Nodes representing physical objects that can be used to set up a simulation with any potential.

Nodes related to operators. 

State Analysis
Nodes related to expectation values, variance, fidelities etc.

Linear Algebra
Nodes related to spectrum, eigenvalues and linear combinations.

Nodes related to defining real and complex numbers.

Nodes that provide common visualization tools.

GPE Physics
Nodes related to Bose-Einstein Condensates (BECs) following the Gross-Pitaevskii-equation. 

Nodes related to time developed potentials and Grape optimization. 

Nodes including comments, for loop and scope setup.