Attribute Nomenclature - What are the do's and don'ts for NX6/TC/TCVis

[MSawtell]

For those that deal with the "meta data" side of the CAD world - i.e. storing material specs, vendor numbers, etc. - what have you seen as do's and don'ts for Attribute Nomenclature in NX6 - especially when you use those Attributes with the rest of the Siemens family of products, like TeamCenter and TCVis?

Are there limits to amount of characters?

Are there "special" characters to avoid - like # or % or & ?

What is the rule on spaces within the Attribute Field Name?

Have there been characters allowed in previous versions that are not longer viable?

 

[MSawtell]

Figure I would bump this up to the top - seeing that my inquiries at Siemens have been hazy. Has anyone in the community run into trouble when creating attribute fields with special characters - or used values with special characters?