Numeric representation of the patch update classification; included to make filtering easier; Values are: 
100 = Critical Security Update (High Priority) 
101 = Important Security Update (High Priority) 
102 = Moderate Security Update (High Priority) 
103 = Low Security Update (High Priority) 
104 = Non-rated Security Update (High Priority) 
110 = Critical Update (High Priority) 
120 = Update Rollup (High Priority) 
200 = Service Pack (Optional) 
210 = Update (Optional) 
220 = Feature Pack (Optional) 
230 = Tool (Optional) 
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