This is a misnomer in a way. 'Sharing' suggests that 'Pathagoras' owns the rights to the document and controls who can access it. That is not how it works. Pathagoras points, but does not control any rights. (You can control read/write/copy/delete rights for via Word and Windows, but that is beyond the scope of Pathagoras.)
So, for a document to be 'sharable,' it need only be on a drive or location where others can get ('point') to it.
That location is typically is a folder on the network server. But it can just as easily be a Dropbox, NetDocuments, OneDrive, etc., folder. If you can point to it, Pathagoras can use it