The info user command is designed to display all information about a command.
It is more detailled than the man user command with several menu.
For example you can go throw a menu and click ENTER to enter in this menu:
$ info open
In this info you can see this:
* Menu: * Linked Channels:: Dealing with channels sharing a file position. * Independent Channels:: Dealing with separately opened, unlinked channels. * Cleaning Streams:: Cleaning a stream makes it safe to use another channel.
Put your cursor on:
* Independent Channels:: Dealing with separately opened, unlinked channels.
And you will instantly transported into this section.