This McStas Component Manual consists of the following major parts:
An introduction to the use of Monte Carlo methods in McStas.
A thorough description of system components, with one chapter per major category: Sources, optics, monochromators, samples, monitors, and other components.
The McStas library functions and definitions that aid in the writing of simulations and components in Appendix A.5.4.
An explanation of the McStas terminology in Appendix B.6.
Additionally, you may refer to the list of example instruments from the library in the McStas User Manual.