: If your "feature" is a custom code change, use the /patch directory. Files placed here are compiled in preference to the original source in /src/enzo , allowing you to test new features without overwriting the base code.
: For the simulation code, navigate to the source directory and run $ make show-config to see which features are currently active before building. Enzo.rar
If this is the Enzo adaptive mesh refinement (AMR) code, "features" are modules that must be enabled in your parameter files. Unlike other codes, all physics packages are pre-compiled into Enzo, but they are turned off by default . : If your "feature" is a custom code