See if nbackup documentation needs additional information on how it looks up aliases

[mrotteveel]

See also FirebirdSQL/firebird#8441

[topcodesoft]

Thanks for opening the ticket. I think it would be useful to add the following information to the documentation:

1. the way nbackup interprets aliases, i.e. it must be in the fb server folder if we want to use aliases
2. service_mgr -action_nbak does not have to be in the fb server folder if want to use aliases
3. nbackup.exe has the option to send to stdout, service_mgr -action_nbak does not

These are specifically things that I did not find (or not understand) directly in the documentation, and it is not easy to find on internet either.