Warning: Display title "<code>dump_entity_sizes</code>" overrides earlier display title "Dump entity sizes".
dump_entity_sizes is a console variable available in all Source games. It lists all the entities in the engine (excluding internal entities), and also lists how large in bytes are those entities. Can be used to keep track if an entity has been changed in a game update.
"dump_entity_sizes" game - Print sizeof(entclass)
Entity Class lists