Title 1, GENERAL PROVISIONS

If a statute refers to another statute of this state, the reference includes any amendments to the referenced statute unless a contrary intent is clearly expressed. [ 1982 c 16 s 1.]

The time within which an act is to be done, as herein provided, shall be computed by excluding the first day, and including the last, unless the last day is a holiday, Saturday, or Sunday, and then it is also excluded. [ 1997 c 125 s 1; 1887 c 20 s 1; Code 1881 s 743; 1854 p 219 …

Words importing the singular number may also be applied to the plural of persons and things; words importing the plural may be applied to the singular; and words importing the masculine gender may be extended to females also. [1891 c 23 s 1, part; Code 1881 ss 756, 965, 1920; 187…

(1) Whenever the use of "registered" mail is authorized by this code, "certified" mail, with return receipt requested, may be used. (2) Whenever the use of "certified mail with a return receipt requested" is authorized or required by this code, electronic return receipt delivery …

Except as otherwise specifically provided by law hereafter: (1) Any report, claim, tax return, statement or other document required to be filed with, or any payment made to the state or to any political subdivision thereof, which is (a) transmitted through the United States mail …

For the purposes of this code and any legislation hereafter enacted by the legislature or by the people, with the exception of chapter 26.04 RCW, the terms spouse, marriage, marital, husband, wife, widow, widower, next of kin, and family shall be interpreted as applying equally t…