(1) The phrase "a complete set of tract indexes," as used in RCW 48.29.020 and 48.29.040, is defined to mean a set of indexes from which the record ownership and condition of title to all land within the particular county can be traced and ascertained, such set of indexes to be complete from the inception of title from the United States of America.

(2) The basic component parts of such a set of indexes are:

(a) An index or indexes in which the reference is to geographic subdivisions of land, classified according to legal description (as distinguished from an index or indexes in which the reference is to the name of the title holder, commonly called a grantor-grantee index) wherein notations of or references to:

(i) All filed or recorded instruments affecting title to particularly described parcels of real property and which impart constructive notice under the recording laws; and

(ii) All judicial proceedings in the particular county affecting title to particularly described parcels of real property are posted, filed, entered or otherwise included in that part of the indexing system which designates the particular parcel of real property; provided, no reference need be made in such index to any judicial proceeding which is referred to or noted in the name index defined in subparagraph (b) below.

(b) A name index or indexes wherein notations of or references to all instruments, proceedings and other matters of record in the particular county which affect or may affect title to all real property (as distinguished from particularly described parcels of real property) of the person, partnership, corporation or other entity named therein and affected thereby, are posted, filed, entered or otherwise included in that part of the indexing system which designates that name.

(3) The indexes prescribed in numbered subsection (2) above, may be maintained in bound books, loose-leaf books, jackets or folders, on card files, or in any other form or system, whether manual, mechanical, electronic or otherwise; or in any combination of such forms or systems.

(4) The extent to which the prescribed indexes shall be subdivided or defined is dependent upon all relevant circumstances. The population of the particular county, the extent to which land within the particular county has been subdivided and passed into separate ownerships, and all other factors which are reasonably related to the purpose of the statutory requirement, are entitled to consideration in such determination.