The Shulchan Aruch HaRav reference article from the English Wikipedia on 24-Apr-2004
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Shulchan Aruch HaRav

Shulkhan Arukh HaRav (Code of Jewish Law by the Rabbi) is a recodification of halakha by Rabbi Shneur Zalman of Liadi, known during his lifetime as "HaRav" (the Rabbi). At a young age, Rabbi Shneur Zalman was asked by his teacher, Rabbi Dovber of Mezeritch to recodify the Shulkhan Arukh so that laymen would be able to learn Jewish law. Although widely accepted, the book was limited in printings. Much of the text was lost in a fire in Lubavich.