Begin. Implementation of a dichotomous table of bats using Notation 3 and SWeLL. block 1 is active. block 1. if block 1 is active and the nose is leaflike then block 2 is active. if block 1 is active and the nose is not leaflike then block 3 is active. block 2. if block 2 is active and the underarm is 54-58 mm then the species is Rhinolophus ferrum equinum. if block 2 is active and the underarm is 39-42 mm then the species is Rhinolophus hiposideros. block 3. if block 3 is active and the ears are merged then block 4 is active. if block 3 is active and the ears are not merged then block 5 is active. End.