The purpose of this regulation, WAC 285-50-300 through 284-50-435, is to implement RCW 48.20.450 through 48.20.470 so as to provide reasonable standardization and simplification of terms and coverages of individual disability insurance policies in order to facilitate public understanding and comparison and to eliminate provisions contained in individual disability insurance policies which may be misleading or confusing in connection either with the purchase of such coverages or with the settlement of claims and to provide for full disclosure in the sale of such coverages.