[Edu4rdSHL]

• hugo.yaml and reference.md: documented version 3.2.0.
• reference.md: a section Names, how every command reads the name of a
  machine or an image (a name as it is, any other text the reference of
  an image, never a machine made from it; the commands of images read a
  name nothing has as a reference too); run's IMAGE and the machine
  beside an image that has its name; rm, images rm, inspect, images
  inspect and push by reference; TAB after logs -f and after run.
• machines.md: run takes a local image's name, and its machine goes
  beside an image that has the name; start of an image's reference.
• images.md: every command takes an image by its local name or its
  reference; images rm NAME|REFERENCE.
• building.md: the name stays with the record that has it; the build
  runs by its reference or the name build gave.