Changes

* Historical tick volume.<br>In most cases supported data sources in MultiCharts provide only historical '''total''' tick volume, no up and down volume. For tick-based resolutins all historical total volume is devided by 2 and allacated to up and down volume.

* Historical minute and daily volume.<br>In most cases supported data sources in MultiCharts provide only historical '''total''' tick volume, no up and down volume. For minute-based and daily-based resolutins all historical total volume is recorded to the data base as total volume and is also doubled as up volume. Down volume is empty.

==Volume is imported from ASCII file==

When data is imported from ASCII a customer has opprotunity to import all kinds of volume: up, down and total volume.

==Volume is calculated in real-time by MultiCharts==