Well, in its simplest form it's just "cost basis averaging" so you would enter Long, let's say, using 1/2 of your full commitment at some initial price. You might even BID lower than the market and force it to "come to your price". But, having then taken a portion of a Long position you are committed to BUY more if the market should come lower, thus lowering your average entry price (your "cost basis") and have completed the process of entering the market "by increments". Also, some time later when you are in profit (we hope...) then you could reduce your commitment by selling 1/2 (an "increment") and then finally selling the rest to go flat again in a "classic" trading cycle.
So "incremental trading" means improving your Entry and/or Exit "cost basis" by never going "all in" and also, I'd recommend, forcing the market to "come to your price" using Limit orders in at least some of your entries to improve your "edge" just a little bit more.
But in Micro Scalping, Incremental trading has a much more complex meaning, so I won't go into it except to say that the very same principles apply, although instead of 2 or 3 entries, you might be using dozens of entries, staggered to improve your "cost basis" or entry price, and also "incremental" profit taking on small portions of your position which move into profit, thus reducing your position; but then increasing your position size yet again, "incrementally" as the market moves. So eventually you become "flat", but you have executed a long sequence of "incremental" entries and profit-takes along the way... This form of trading is almost unknown among traders, and I've had to invent a lot of technique and analytics to make this viable, but the same basic ideas of "cost basis averaging" and "exposure modulation" (controlling how much you are exposed to the market, increasing it and decreasing it within the same overall trade). So none of that is new, but it just becomes more systematic and somewhat more extreme, and usually works on "intra-trade targets" in the range of 3-10 PIPs or so. This type of trading requires precision at many levels, and involves computer assisted "triggering" to grab those moments when there is significant counter-trend pullback opportunity. Anyway, that's "incremental trading" method. It allows for precise trade management, control over exposure, so that you don't get too exposed (have too large lot sizes) too soon, and anticipate that the market will move against you, as part of your trading plan, with analytics to support your belief that the market will not go against you indefinitely, as that would be "trader suicide"
HyperScalper