What is the meaning of P1, P2 ecc in the blocks

[notoriusfx]

Hi,
I would like to know the meaning of P1, P2 ecc. that I see in the blocks when I click on Variable tab. How can I use them?

[TipsyWisdom]

@roar is the person I see using them all the time.

[paragorundu]

@notoriusfx You may find some information on the link below:

https://fxdreema.com/instructions/builder/constants-and-variables

notify: @jsauter86

[miki]

@notoriusfx As you can see from the image in the example below EA opens three trades buys and using P4 + V1 I create a loop where I change the variable's value every time the block passes. In this case I'm going to double the size at each step.

[notoriusfx]

@miki Thank you for your clear explanation.