Setting Visio File Password

[Sho]

Is there a way of setting a password so that on opening the Visio file you
have to enter a password to get access. I have set a password through the
Drawing Explorer Window but this does not ask for the password when opening
the file

Any ideas?

 

[Mark Nelson [MS]]

I believe Visio 2003 disabled this functionality because it is not secure.
Anyone can save the file as XML and see the password in plain text.