Sorry, you're still not coming clear here. That object looks _exactly_ like an OHLC bar. Also from what I've seen, Zorro's (might be FXCM's) bar files are constructed from 1min bars. If it looks like a bar, swims like a bar and quack like a bar it's an effing bar.

So, when 2 posts above you say "A bar is a time period, while a tick is the smallest price cluster" I really don't understand what you mean.

Above I see structure that describes the most common price bar nowadays (used to construct the most popular OHLC and candlestick charts). Yes, it is awkwardly called 'TICK', which reminds of a standard price tick I explained earlier. But beside C source it should NEVER be called a tick to avoid any confusion with real price ticks.