Framework Read Only when someone already opend framework?

[Emil]

Dear users,

I want that an users gets an message from framework if somebody already have opened that model in framework?  ???

Thanks and Regards
Emil

[MFGF]

Hi,

Do you have a source control system such as Microsoft Visual Sourcesafe or CVS?  Checking your project into either of these will provide the functionality you require.

MF.