Make External is disabled in IDE

I have a module with a class and some methods which works fine.
But why is the menu option ‘Make External’ of the right mouse button disabled ?

I don’t think you can have an external module with embedded classes. Only methods and properties.

yes that’s how it is.
but how do you handle code you use in multiple applications ?
do you export them as external as I tried to do, or what’s your way to handle this ?

If you are using a version control system like subversion, you could create one of their external references. I prefer that way because you can link to a particular revision if you need to.

thanks Tim and Greg, still don’y know exactly how to do it ( Using mercurial as VC )
I will rewrite the object which does not export as external.
thanks’ again

Drag the class outside of the module and export them separately. Put them into a Folder so you can drag them into another project all together.

yes Tim, I have done it and that way it is working,

thanks Tim