BOQ()
 Determines the date for the beginning of a quarter
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 Syntax

     BOQ([<dDate>]) --> dBeginningOfQuarter

 Argument

     <dDate>  Designates a date for which the first day of the quarter in
     which it lies is determined.  The default is the system date.

 Returns

     BOQ() returns the date at the beginning of the quarter that contains
     <dDate>.

 Description

     For example, use BOQ() to determine when the current quarter that
     contains <dDate> began, and then compute the number of days that have
     elapsed since the quarter began.

 Note

     .  If you do not specify a date, the function automatically uses
        the system date.  An empty date parameter always returns an empty
        date.

 Example

     Display the date of the first day of the current quarter:

     ? "The first day of the current quarter is:", BOQ()