The given function is intended for the concealment nick from the list of users of the Hub. It is possible concealment and any user at will of the operator. Once per minute users from the list automatically hides by the timer.
Concealment is made by command !hideme. By command !showme You become visible again. By command !hideuser <nick> and !showuser <nick> concealment and display of any user is made. The list of the latent users is looked through by command !hides. Thus in the list before anybody there is a flag (1 or 0) that the user means, accordingly, online or not.
It constant HiddenUsersSave in file Vars.lua is 1, then the base of the hidden users will remain in file HiddenUsers. Thus at reboot of the Hub or an exit of the user it remains in the list. By default value of this constant is 0.