A.1.1 Using info

info is the GNU documentation viewer. Some programs provide documentationin info format, and you can use info to view that documentation. You can start up the viewer by simply typing info, or by supplying a topic as well:

info emacs

You can also bring up the information on info itself, which includes a tutorial, like so:

info info

Now, you may navigate with these keys:

arrows
Move the cursor around the document
m RET
Select the menu item that’s at the cursor
u
Move “up” in the document
n
Move to the next page
p
Move to the previous page
s
Search for something
g
Go to a specific page
q
Quit info

You might notice that the top line of the screen indicates the next, previous, and “up” pages, corresponding nicely to the actions for the n, p, and u keys.