Ashona,
ACL will allow you to open files, though I haven't done it in several years.
There is some fairly good documentation on ACL in the Help Center (starting
with Epic 5.4 and later). This is NOT the F1 help, but is a couple of items
below in the 'help' menu. Once the help center opens, select programming and
the command language reference.
I forget if it is 'file_open()' or 'doc_open()', but the help is searchable.
Lynn