Hello Sharon:

On Sat, Oct 14, 2017 at 7:45 AM Sharon Kimble <boudiccas@skimble.plus.com>
wrote:

>
> Is it possible to cross reference to another org-mode file in a
> different directory?
>

Yes, it is possible, you have to use the following syntax:

[[file:/path/to/other/org/file.org:* heading][My other org file]]

You can check the manual for the different link types and examples
http://orgmode.org/manual/External-links.html




> Example - cooking 1 has an entry for Mayonnaise, so can file 2 have an
> entry for mayonnaise but cross-referenced to cooking 1?
>
> --8<---------------cut here---------------start------------->8---
> id1=cooking1.org
>
> ** Mayonnaise
> [[*Mayonnaise][Mayonnaise]]
> blurb and blah
> --8<---------------cut here---------------end--------------->8---
>
> --8<---------------cut here---------------start------------->8---
> id2=cooking2.org
>
> ** Mayonnaise 3
>
> See also [[*id1:Mayonnaise][Mayonnaise]] and also [[*Mayonnaise
> 2][Mayonnaise 2]]
>
> --8<---------------cut here---------------end--------------->8---
>
>
In your example, the references would be written:

See also [[file:cooking1.org:** Mayonnaise][this mayonnaise recipe]] and
also [[*Mayonnaise 2][this other one]]