Wash. Rev. Code § 7.77.010
In this chapter:
(1) "Collaborative law communication" means a statement, whether oral or in a record, or verbal or nonverbal, that:
(3) "Collaborative law process" means a procedure intended to resolve a collaborative matter without intervention by a tribunal in which persons:
(6) "Law firm" means:
(14) "Sign" means, with present intent to authenticate or adopt a record:
[ 2013 c 119 s 2.]