How to properly use Jason boost in modx?

Question

MODX

https://modx.com/blog/2012/09/14/tags-as-the-resul...
in the article people describe how you can optimize modx,
I probably didn’t understand something, here’s an example based on his example:

// этот кусок не выводится вообще

Answer 1

It's not an acceleration at all. This is convenience. Look at the year the article was published. Much water has flown under the bridge since that time.
PS you have extra 2 brackets at the beginning and at the end

Answer 2

321

- this works but it's not pretty (