Any school library wishing to index its OPAC only with Sears headings would be required to set up the software to index only properly flagged fields. 2.4 Dictionaries There is no single dictionary that has been designated as an authority for Canadian usage in cataloguing. This can create some difficulties in the creation of a MARC catalogue when the sources of MARC records may be using alternate spellings. The individual library must decide to accept American spelling or select any good Canadian dictionary and change. The extra time and effort this requires may render the decision to convert American spellings to Canadian ones impractical.
Automated catalogues result in filing and filing rules becoming redundant.