Variable Creation allows you to define a formula using 1 or more selected variables and basic operators.
To create a variable, first name it.
Then begin typing the first part of the formula and you should see a list of relevant options. Select what you're looking for then add any operations and additional variables.
Additionally you are able to perform a transformations (such as log(), ema(), etc) on the variables. Please see the custom equations page for more details.
On the left side of the page, you can find the Boosted Ratio presets. You can find any selected presets and newly created variables on the right side of the page. You can click on any variable to see how it is being calculated.