The three main types of Sacrament Program, as learned in 3rd grade science, are igneous, metamorphic, and sedimentary. Many people mistakenly think that a freshly printed program is sedimentary because it’s flat, but that’s actually the igneous form—having been freshly spewed from the magma-hot internals of a printer. Metamorphic are those which have been crumpled and put in a wastebasket, then pulled out and re-flattened for later use. Sedimentary programs are much rarer and build up over decades as programs (usually fashioned into the shape of airplanes) accumulate in inaccessible places like light fixtures and the tops of shelves in the cultural hall. Keep an eye out for sedimentary programs as they are highly prized amongst collectors.