procedure goes through all files that have fields or sub-fields
pointing to a particular FileMan File. It looks for pointers to
particular entries in that File, and either re-points each entry to a
different specified entry, or deletes such pointers.
(Required) A file number.
||(Required) Array containing list of entries to be re-pointed or deleted.
In this example, we want all pointers to entry `38 in File 9999999.14
to be re-pointed to entry `103. `103 must exist.
In this example, we want all pointers to entries `38 and `666 in File 9999999.14 to be deleted.
Reviewed/Updated: August 2017