Just saw this in another thread, I'm a former happy user of MultiCharts, in MultiCharts or EasyLanguage we have the notion of a uptick or downtick. These ticks or volume if you prefer isn't available in all types of charts which is quite obvious, another story 
When I normally talk bid or ask I'm referring to bid side/ ask side which has nothing to do with the trade, so to continue with subject... historical bid ask, does this means that NT will store those continously and thereby needs to be connected to the provider? Or does bid ask actually means tick trades taking from datafeed, and then just tag them with up or down?
As you can see, not all timeframes supports uptick/ downtick, but this also depends on the data provider.
When I normally talk bid or ask I'm referring to bid side/ ask side which has nothing to do with the trade, so to continue with subject... historical bid ask, does this means that NT will store those continously and thereby needs to be connected to the provider? Or does bid ask actually means tick trades taking from datafeed, and then just tag them with up or down?
As you can see, not all timeframes supports uptick/ downtick, but this also depends on the data provider.
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