Core components relationship ===
Acquire other objects from a screen
Class Property
tag s.tags
tag s.selected_tag
tag s.selected_tags
client s.clients
client s.hidden_clients
client s.tiled_clients
Acquire a screen from other objects
Class Property
tag t.screen
client c.screen
naughty.notification n.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