Failed to go to previous point in Emacs

Question

Suppose I am in Guide A. I click

enter 

and now I'm in guide B.

How can you return to the previous one-command manual in Emacs?

Answer 1

Try entering " C-h m" to get a list of modes in the help window, there you will find

...
C-c C-b     help-go-back
...

which seems to work.

Answer 2

Subject is a little misleading. You really do not want to return to the previous point, but you are viewing the previously viewed manual.

, , , C-x C-@, pop-global-mark.