anchor.diff:  |     Syntax|`AuthScanSharedSecret`
   |    Default|The empty string.
   |    Context|Any
  -|Cardinality|0..n
  +|Cardinality|0..1
   |     Module|authscan
   |    Version|0.12
   |===============================================================================
positive.code: |     Syntax|`AuthScanGracePeriod`
  |    Default|300 (5 minutes).
  |    Context|Any
  |Cardinality|0..n
  |     Module|authscan
  |    Version|0.12
  |===============================================================================
  
negative.code: |     Syntax|`AuthScanRequestHeader`
  |    Default|X-Auth-Scan
  |    Context|Any
  |Cardinality|0..1
  |     Module|authscan
  |    Version|0.12
  |===============================================================================
  