RDA 4.2: 250 field (Edition)
This step will bring abbreviations commonly used in the Edition Statement (250) and the Cartographic Mathematical Data (255) fields in line with RDA practices a much as possible by machine manipulation. By using lists that can be updated and expanded as needed it’s possible to modify the changes to either of these fields to fit your needs.
Abbreviations spelled out in 250 fields include numeric designations (1st to first, 3d to third, etc.), ed. to editor, rev. to revised, etc.
Abbreviations to be spelled out in 255 fields include RA to Right ascension, Decl. to Declination, eq. to quinox, hour to hr., and ca. changed to approximately and brackets removed.
255 $a Scale [ca. 1:90,000]. Becomes 255 $c Scale approximately 1:90,000. 255 $c (RA 16 hr./Decl. -23° ; eq. 1950) Becomes 255 $c (Right ascension 16 hr./Declination -23° ; equinox 1950)
Note: No changes will be made to 255 $b Statement of Projection as it is a transcribed field.
1.0 - 2.0 - 3.0 - 4.0 - 5.0 - 6.0