I am reading up on the jhana and theres this paragraphs. There talking about the 3 ways Beginning, Middle & End and the 10 characteristic of jhana. I'm not sure what im suppose to do or what this is suppose to mean. The book is the path to purification. 

> 
> “‘Of the first jhána intensification of equanimity is the middle’: how many
>  characteristics has the middle? The middle has three characteristics. He [now]
>  looks on with equanimity at the mind that is purified; he looks on with equanimity
>  at it as having made way for serenity; he looks on with equanimity at the
>  appearance of unity.32 And in that he [now] looks on with equanimity at the
>  mind that is purified and looks on with equanimity at it as having made way for
>  serenity and looks on with equanimity at the appearance of unity, that
>  intensification of equanimity is the middle of the first jhána. These are the three
>  characteristics of the middle. Hence it is said: ‘The first jhána is good in the
>  middle which possesses three characteristics.’
> 
> 
> 

Heres the full page. The parts specifically im asking about is on line 112
[![enter image description here](https://i.stack.imgur.com/11rkq.jpg)](https://i.stack.imgur.com/11rkq.jpg)