Used in @if statements to model one-time-a-year occurrences.
Strategic Finance numbers the weeks from 1 to 52 (or 53) beginning with the first week of the fiscal year. For example, you use this function if a dividend were paid out in a week.
The fiscal week number, between 1 and 53.
For Common Dividend (v1880) and Weighted Average Common Shares Outstanding (v3410):
@if(@weeknum=37,v3410*.65,0)
returns a Common Dividend corresponding to 65 cents per common share in the 37th week of each year and 0 in all other weeks.