Explanations:
    st = Steal in % [see man proc] (extended)
        Color: Red
    gt = Guest in % [see man proc] (extended)
        Color: Red
    sr = Soft IRQ usage in % (extended)
        Color: White
    ir = IRQ usage in % (extended)
        Color: White
    io = IOwait cpu sage in % 
        Color: Purple
    id = Idle cpu usage in % (extended)
        Color: Black
    ni = Nice cpu usage in % 
        Color: Green
    us = User cpu usage in % 
        Color: Yellow, dark yellow if to>50%, orange if to>50%
    sy = System cpu sage in % 
        Blue, lighter blue if >30%
    to = Total CPU usage, which is (100% - id)
    pk = Max us+sy peak of last avg. samples (extended)
    avg = System load average; desc. order: 1, 5 and 15 min. avg. 
    1px horizontal line: Maximum sy+us+io of last 'avg' samples (extended)
    Extended means: text display only if extended mode is turned on
Examples:
    loadbars --extended 1 --showcores 1 --width 600 --hosts localhost
    loadbars --hosts localhost,server1.example.com,server2.example.com
    loadbars --cluster foocluster (foocluster is in /etc/clusters of cssh)
--average <ARG>	- Num of samples for avg. (more fluent animations)
--cluster <ARG>	- Cluster name from /etc/clusters
--extended <ARG>	- Toggle extended display (0 or 1)
--factor <ARG>	- Set graph scale factor (1.0 means 100%)
--height <ARG>	- Set windows height
--hosts <ARG>	- Comma sep. list of hosts; optional: user@ in front to each host
--inter <ARG>	- Set update interval in seconds (default 0.1)
--samples <ARG>	- Set number of samples until ssh reconnects
--showcores <ARG>	- Toggle core display (0 or 1)
--showtexthost <ARG>	- Toggle hostname/num text display (0 or 1)
--showtext <ARG>	- Toggle text display (0 or 1)
--sshopts <ARG>	- Set SSH options
--title <ARG>	- Set the window title
--width <ARG>	- Set windows width