Questions about variables "categories" and "printing"

[Zeping Lee]

I find two variables in v1.0 branch are not documented in the spec. Are they mistyped? It seems that printing should be printing-number.

schema/schemas/input/csl-data.json

Lines 65 to 70 in ea19f7a

 "categories": { 
   "type": "array", 
   "items": { 
     "type": "string" 
   } 
 }, 

schema/schemas/input/csl-data.json

Lines 387 to 389 in ea19f7a

 "printing": { 
   "type": ["string", "number"] 
 }, 

[Zeping Lee]

BTW, variable license is in csl-variables.rnc but not included in csl-data.json.