[Devel] Reserved FT_VALIDATE_*

[Masatake YAMATO]

Hi,

I've just to start gxvalid. You may know what I mean:)
It is my yet another spare time project.

I'm learning otvalid code. 
It is much easier to read than otlayout.

The question is about FT_VALIDATE_*.

#define FT_VALIDATE_BASE  0x0100
#define FT_VALIDATE_GDEF  0x0200
#define FT_VALIDATE_GPOS  0x0400
#define FT_VALIDATE_GSUB  0x0800
#define FT_VALIDATE_JSTF  0x1000

I wonder why FT_VALIDATE_* are not started from 0x0001.
Are the numbers from 0x00 to 0xFF used by something other 
than otvalid?

I wonder which number I should use for FT_VALIDATE_mort. 

Regards,
Masatake YAMATO