Using $S in PRINT Templates
From VistApedia
There is a MUMPS function named $SELECT, (which can be shortened to $S) as explained by Ed de Moel on this MUMPS By Example [$SELECT Page].
Similarly, there is a $S FUNCTION used in FileMan TEMPLATES, most commonly in PRINT templates, but available for INPUT templates, and SORT templates.
There is a at least one difference between $SELECT in MUMPS and $S in FileMan. $SELECT in MUMPS will evaluate the "conditions" in turn, until it finds one that is true, then return the "result" associated with that condition.
$S in FileMan will evaluate the "conditions" in turn, even after it finds one that is true, then return the "result" associated with the first condition that was true.