[comp.sys.mac.hypercard] Looking for a graceful way to open a file.

shaul@suna.CMI.COM (Shaul Markovitch) (01/12/89)

I would like to be able to open a text file that resides
 on an appleshare server. If the file is already open by other
user, HyperCard will alert me with a dialog box.
  
I would like to be able to open the file from a script
and be able to check if an error occurred (like any normal
open command).

Is there anyway to achieve it through HyperCard (I believe 
that the answer to this one is - no)

Is there an XCMD that opens a file in a graceful way ?

If not, is there an XCMD that checks if a file is already open?