anchor.diff:  [[the_first_day_of_week]]
   ==== The first day of week
   
  -* This value cannot be specified, the default value is Sunday.
  -
  -* The DATEDIFF function returns the number of Sundays between _startdate_ and _enddate_. This function counts _enddate_ if it falls on Sunday, but doesn't count _startdate_ even if it does fall on a Sunday.
  +* The first day of the week is Sunday. Changing the first day of the week is not supported.
  +
  +* The DATEDIFF function returns the number of Sundays between _startdate_ and _enddate_. This function counts _enddate_ if it falls on a Sunday, but doesn't count _startdate_ even if it does fall on a Sunday.
   
   +
   For example,
  
positive.code: [[the_first_week_of_year]]
  ==== The first week of year
  
  This value cannot be specified, the default value is the week in which Jan 1 occurs.  
  
  [[negative_or_zero]]
  ==== Negative or zero
  
negative.code: [[date_difference_in_minute]]
  ==== Date Difference in MINUTE
  
  * This function returns the value of 2 because two minute boundaries are crossed.
  +
  ```
  SELECT DATEDIFF( MINUTE
  