Question about Spot Grid Bot

hi all, i've a question about spot grid bot in binance

let's imagine, i set the worth vary 100-120 with arithmetic grid zero.5
meaning im gonna have 40 grids, proper (or 41 doesnt matter)?

if i begin the bot at exactly 100, will it purchase 40 positions directly? or just for 1 position ($100)?
and place a limit promote order at these grids (100.5, 101.zero, 101.5, 102.0, and so on)