sequenceDiagram
Alice->>John: Hello John, how are you?
loop Healthcheck
    John->>John: Fight against hypochondria
end
Note right of John: Rational thoughts!
John-->>Alice: Great!
John->>Bob: How about you?
Bob-->>John: Jolly good!

TEST

TablesAreCool
col 1 isleft-aligned$1600
col 2 iscentered$12
col 3 isright-aligned$1