GNU Info provides a way to define arbitrary key-to-command bindings and variable settings, overriding the defaults described in this document. (The --vi-keys option rebinds many keys at once; see –vi-keys.)
On startup, GNU Info looks for a configuration file in the invoker's
HOME directory called .info1. If it is present, and
appears to contain Info configuration data, and was created with the
current version of the infokey command, then Info adopts the
key bindings and variable settings contained therein.
The .info file contains compact, non-textual data for reasons of
efficiency and because its design was lifted wholesale from the GNU Less
program, which also does it that way. It must be created by compiling a
textual source file using the infokey command.
[1] Due to the limitations of DOS filesystems, the MS-DOS version of Info looks for a file _info instead. If the HOME variable is not defined, Info additionally looks in the current directory.