A relative reference in @if statements.
Forecast periods are determined by the historical/forecast boundary set in Defining, Deleting, and Displaying Time Periods.
True—if the period is the last historical period in the model
False—if not
If a model contains 6 years starting in 2005, with 2006 as the last historical period, then the 2007–2010 are forecast. This formula:
@if(@islasthist, 1, 2)