Where is the CAlglib class reference manual?

[karp wak]

I wanted to do a linear regression like in this example.

https://www.mql5.com/es/code/1146

I was looking for the CAlglib class reference manual but i found nothing in MQL5

i was looking in the official project site but i found nothing too.

https://www.alglib.net/dataanalysis/linearregression.php#header0

Someone knows where i can found the reference manual for CAlglib class members methods?

Thank you so much!!