E.18.2:1.1 - Use this when

• one selected TransformationFlowStructure, one selected TransformationFlowStructureNetwork@Context, or an independently identified part of that subject needs a graph, algebra, category, tuple, morphism, quotient, fold, refinement, factorization, wiring, matrix, or network expression;
• a diagram or equation set helps compare composition, decomposition, coarser/finer partitioning, internal transfer, crossing, or refresh inside one TFS, or exact cross-member relations in one selected network, but the mathematical expression itself must not authorize work;
• a source says “graph”, “network”, “path”, “morphism”, “algebra”, “category”, “workflow”, “pipeline”, “dataflow”, or “functional diagram” and the claim being made is the mathematical description of one already selected TFS or TFS network;
• a reader needs to decide whether the visible object is one E.18 TFS, one E.18.NET network, an E.18.2 mathematical description, a C.29 lens-use claim, or only an E.17 publication face.