For example, Fig. , showing the relationship between I4/mcm and its F4/mmc setting, was generated using the script: Thus, space group 10 was created with a default compatible unit cell, symmetry elements were drawn, and an example set of equivalent atoms was added in a default general Wyckoff position. The transformation to space group 13 used the explicitly scripted CLEG expression. Actually, we didn't need to know that transform. We could have simply used the minimal CLEG expression with space group numbers or Hermann-Mauguin names: modelkit spacegroup "10 >> 13" packed or modelkit spacegroup "P2/m > P2/c" packed because Jmol maintains a full list of over 600 conventional crystallographic space group settings, as well as over 3700 group-maximal subgroup relationships up to index 4. (See the supporting information.) Thus, Jmol can "fill in the blanks" of a CLEG expression as neededin this case by looking up a transform from the reference setting of space group 10 to its maximal subgroup 13.