Enables RNA polymerase II cis-regulatory region sequence-specific DNA binding activity. Acts upstream of or within several processes, including animal organ development; chordate embryonic development; and regulation of transcription by RNA polymerase II. Located in nucleus. Is expressed in several structures, including alimentary system; central nervous system; embryo mesenchyme; respiratory system; and urethra. Used to study persistent fetal circulation syndrome. Human ortholog(s) of this gene implicated in persistent fetal circulation syndrome. Orthologous to human FOXF1 (forkhead box F1). [provided by Alliance of Genome Resources, Apr 2022]