Core components relationship ===
Acquire other objects from a screen
ClassProperty
tags.tags
tags.selected_tag
tags.selected_tags
clients.clients
clients.hidden_clients
clients.tiled_clients
Acquire a screen from other objects
ClassProperty
tagt.screen
clientc.screen
naughty.notificationn.screen
Legend: c: a client object, t: a tag object, s: a screen object, k: an awful.key object, b: a awful.button object,n: a naughty.notification object