Voice warning for non-exportable units

[DoctorNerve]

I noticed the WARNING: at the top bar area of the Voice editor for units that don't export to Java. This is nice!
I noticed it, though, when I copied and pasted two Clocks and two Shows from the Top into the Voice. The Voice warning only had room to let me know Show2 would not be exported.

Suggestion: have the Warning be a button that appears instead of a message, maybe labelled "Java Export Warning". Clicking it opens a little JFrame with a text area which enumerates all the things that cannot export to Java.

Also it would be helpful to specify "...not be exported to Java" instead of just "not be exported". A new Syntona user might get that confused with "will not be saved"