[ sToken ] : Start Of Prefix
The s token prefix can be applied to the tokens [d], [w], [m], [q] and [yyyy].
•[sd], [sddd], [sdddd] : Conditional Day Tokens.
•[sw] : Conditional Week Tokens.
•[sm] : Conditional Month Token.
•[sq] : Conditional Quarter Token.
•[YYyy], [yyYY], [YYYY] : Conditional Year Number
The presence of this prefix tells Q++ to ignore the token unless the current date is at the beginning of the time period denoted by the TokenRoot. Note that this prefix is not a zap token. It replaces the token with a blank.