What is a Stage 2 Mark-up and why it is liked by swing traders?

Great setup being formed as the stage 1 accumulation seems about to end. Thus, stock is ready to enter the favourate phase of every trend following trader i.e. Stage 2 Mark-up period.

Now,
What is a mark-up period?

Here, a stock exits a phase of accumulation where smart money accumulates a large chunk of share from the market and picking all the offers made by the sellers. Thus, sucking the liquidity and at this point, a simple maket order will take all the shares from the sellers accending the price upwards. Here all the short sellers are trappeded, therefore, making the stock a good candidate for sidelined cash to enter.