OptionalnowOptionalrangesThe range buttons. [] leaves them out. Default DEFAULT_RANGES.
OptionaltargetWhat the bar acts on, read at every use: a grid passes its focused chart. Default: the context's chart, with no ranges.
OptionaltimezonesZones the timezone menu lists first. Default: those the settings dialog offers.
Clock for the time and the market status, in milliseconds. Default
Date.now.