A homeopathic repertory is essentially an index of symptoms arranged in some logical fashion. Each symptom or Rubric has beside it a number of remedies which are known for the symptom. By known, we mean that the symptom has some relationship to the remedy. It may have been produced in a proving. It may come from the clinical experience from a revered source such a Kent of Boenhausen of some modern or even contemporary author. In any event a high degree of certaintity must be accorded any inclusion. Errors have occurred and are continually corrected. Debate is alive about the veracity of a particuliar inclusion.

A line on the page of a Repertory might look like this.

Mind; Fear; Animals; Snakes, of (19): lach. abel. arg-n. ars. bell. calc. calc-s. carc. elaps. hep. ign. spig. sulph. syph.

Each of the above is an abbreviation for the full name of a remedy such lach = lachesis muta. Often the abbreviation of the name of the author or authoritative source where entry derives from. For example, "Schm" indicates that it has come from the book "Homeopathy and Minerals" by Jan Scholen.

The most popular modern Repertories are "The Complete Millennium Repertory" and "Synthesis".

Considerable information on the subject is available at http://www.repertory.org