##Collapsing entity groups
##collapse expand entity groups
##You can hide the content of an entity group by using 'collapsed=yes'. It is also possible from the GUI. Note that some parts of the chart may disappear, these are replaced by a small indicator.
hscale=auto;
C: Client;
SI: Server Infrastructure
    [collapsed=yes] {
    S: Server;
    B: Backend;
};
->C: Hit;
C=>S: Request to Server;
S>>B: Internal Query;
S<<B: Internal Response;
C<=S: Reply from Server;
