The User Equivalence File is read by Metamorph as an overlay to the Main Equivalence File. The search looks for matching root entries first in the User Equivalence File, and then in the Main Equivalence File. The information found in both places is combined, following certain rules.
When editing equivalences using the BACKREF program as shown, the changes you make are written to the named User Equivalence File. It is also possible to hand edit a User Equivalence File if you understand the syntax which is used when writing directly to it.
In order to precisely deal with issues such as precedence, substitution, removal, assignment, back referencing, and see references, a strict format must be adhered to. Any erroneous characters included in the User Equivalence File could be misinterpreted, causing unseen difficulties. Therefore, one must take care to ensure the User Equivalence file is flat ASCII.
If you want to create a User Equivalence file independent of
backref -e feature, follow these steps:
eqvsusr.lst". If you already have a list of words and equivalences you want to add in a flat ASCII file, you can edit the entries into the prescribed format. Otherwise, simply begin entering root words with their equivalences as outlined in the following sections.
backref" program supplied with your Texis package.
Backreftakes an ASCII filename as the first argument, and creates a file of the name given in the second argument. For example, use this command on your ASCII User Equivalence File:
backref eqvsusr.lst eqvsusr
eqvsusr.lst" is the ASCII file containing your User Equivalence
entries, and "
eqvsusr" is the file ready for use by the
Metamorph search engine.
eqvsusr", and must be located in the "
morph3" directory, in order for it to be used by a Metamorph search.