[Nexus] New NXdata group attribute implementation question

["V. Armando Solé"]

Hello,

I am writing a "NeXus compliant file" and I have a difficulty.

As far as I know, most of NeXus attributes are just strings. Therefore I 
have difficulties to know what you exactly want when you write:

@axes="x","y","tof"


Do you want

1 - an array of fixed length strings?
2 - an array of variable length strings?
3 - a single string containing "x", "y", "tof" that is to be split via 
the ","?

Please let me know. I would prefer options 1 or 3 to prevent issues with 
some languages or wrappers where variable length strings are not 
properly supported or are cumbersome to be supported.

Best regards,

Armando