The HPFUCMSPEC Procedure OverviewGetting StartedSyntaxExamplesReferences Syntax: HPFUCMSPEC Procedure The HPFUCMSPEC procedure uses the following statements. PROC HPFUCMSPEC options; AUTOREG options; BLOCKSEASON options; CYCLE options; DEPLAG options; FORECAST options; INPUT options; IRREGULAR options; LEVEL options; SEASON options; SLOPE options; Last updated: March 05, 2026