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Here is the concept lattice for concepts, partly unfolded. We have obtained this lattice by running concepts several times each time using a different command line switch of concepts. Let us assume, we are interested in command line switch "-f" (which lets the user specify the output format).

You can interpret the lattice as follows (lattice nodes are represented as clusters, features as green triangles, routines as red squares):

• Required routines per feature: All routines executed for option "-f" are those attached to the lattice nodes that are annotated by option "-f". These are the lattice nodes C5, C3, C4, and C0.
• Feature specificity of routines: The higher a routine in the lattice, the fewer features it serves. The most general routines, you find in the bottom lattice node; the more specific routines in the upper areas of the lattice. Hence, the lattice ranks the routines according to their feature specificity.
  A feature-specific routine is one that is executed solely for one feature. All feature-specific routines for a feature are attached to the lattice node that contains only this feature. As the lattice below shows, there is no routine specific to option "-f". However, the two routines PrintGraph and PrintCheck are quite specific to "-f".
• Jointly required routines for features: To identify routines jointly required for two features, you simply locate the closest common node toward the bottom element starting at the nodes to which two features are attached. All routines at and below this common node are those jointly required for the features. For instance, ConceptLattice, ConceptSubconcepts, ContextLatticeDelete, and ContextConcepts are jointly required by the options -f, -G, -g, -c, and -a.
• Jointly supported features for routines: Features to which two routines jointly contribute can be identified by the closest common node toward the top element starting at the nodes to which the two routines are attached. All features at and above this common node are those jointly implemented by the two routines. For instance, PrintGraph and PrintCheck jointly support feature -f.