The colon introduces an enumeration for the previous words and excludes all but what follows
Siddoway 13 [A.C.J. Siddoway, Judge for the US Court of Appeals for Washington, 2013, “STATE OF WASHINGTON, DEPARTMENT OF LABOR AND INDUSTRIES, Respondent, v. DONALD M. SLAUGH, Appellant, LOCKHEED MARTIN HANFORD CORPORATION, Respondent.”, No. 31081-7-III., Court of Appeals of Washington, Division Three, //zrubin]
"A colon may introduce a summing up, an illustration, quotation, or enumeration, for which the previous words in the sentence have prepared the reader." HUTCHINSON, supra, at 241. In Stuart v. East Valley Consolidated School District No. 361, 61 Wn.2d 571, 575, 379 P.2d 369 (1963), the court differentiated the use of a colon, which one could contend introduced matter that was explanatory of the phrase that preceded it and therefore restrictive, from the use of a semicolon, indicating that matter that follows is not restrictive, but supplementary.