[openbeos] Question on Extra Attributes of FileTypes preferences

Hi there!

I hope someone can shine some light on an option in the FileTypes preferences.
When you add an "Extra Attribute" to a filetype, a panel opens where you define it. There's a drop down menu "Display As" with "Default" and "Rating". If you chose "Rating" the "Special" option below it can be filled. 
What is "Rating" and what is expected in the "Special" field?
When you define the attribute you have several options for "Type". Besides String, there is Boolean, Float, Double etc. There are also different Integers, 8/16/32/64 bit. I was wondering, if the mkindex command doesn't have to be extended with these different sizes. Currently there's only one "int". 

Thanks!
Humdinger

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