The most common archiving action is to move a project tree to another file, the archive file.
The default archive location is a file in the same directory as the
current file, with the name derived by appending _archive to the
current file name. You can also choose what heading to file archived
items under, with the possibility to add them to a datetree in a file.
For information and examples on how to specify the file and the heading,
see the documentation string of the variable
There is also an in-buffer option for setting this variable, for example:
If you would like to have a special ARCHIVE location for a single entry
or a (sub)tree, give the entry an
:ARCHIVE: property with the
location as the value (see Properties and columns).
When a subtree is moved, it receives a number of special properties that
record context information like the file from where the entry came, its
outline path the archiving time etc. Configure the variable
org-archive-save-context-info to adjust the amount of information