{agenda date_debut, periode, 
[(#DATE|date_debut_semaine_queljour{mercredi,an})], 
[(#DATE|date_debut_semaine_queljour{mercredi,mois})], 
[(#DATE|date_debut_semaine_queljour{mercredi,jour})], 
[(#DATE|date_fin_semaine_queljour{mercredi,an})], 
[(#DATE|date_fin_semaine_queljour{mercredi,mois})], 
[(#DATE|date_fin_semaine_queljour{mercredi,jour})]}