[Xastir] DBFAWK guidance? and layer numbering documentation

[Alan Crosswell]

Alan Crosswell wrote:

> Tom Russo wrote:
>
>>
>> I'm also very confused about how we were *meant* to use the c_, w_ and
>> z_ files in conjunction with dbfawk support --- if I assign them to
>> the same map layer that I always did I get a useless, solid lavendar
>> colored US with no county boundaries.  I tried tweaking the dbfawk
>> files but didn't really know what I was doing --- I changed "filled=1"
>> to "filled=0" in nwsc_ddmmyy.dbfawk, but it was late and I didn't
>> realize there was also nwsw_ddmmyy.dbfawk and nwsz_ddmmyy.dbfawk
>> interfering.  By the time I realize there were multiple dbfawk files
>> to tweak I'd just rebuilt xastir without dbfawk support and shrugged
>> it off.
>>  
>>
> The NWS files are meant to be used for WX alerts.  The .dbfawk stuff 
> stil doesn't work properly with them.
>
PS: There are multiple .dbfawk files for nws_* because each of the 
various NWS file types has a different signature.

/a