[tei-council] Re: on spec grp 2, datatypes normalized

[Lou Burnard]

Sebastian Rahtz wrote:

>Does it strike anyone that instead of
>  foo="true|false|unknown"
>we could just say that the absence of the foo attribute
>means "unknown"? then all the boolean
>attributes stay as true|false, but some are required
>and some are optional.
>
>  
>
Not a bad idea, but we actually have four values for the extended 
boolean -- true, false, unknown, and inapplicable