COMMON LAW
In the absence of statutory law regarding a particular subject, the judge-made rules of common law are the law on that subject. Thus the traditional phrase "at common law" refers to the state of the law in a particular field prior to the enactment of legislation in that field.
You'll probably need to reference a legal glossary during your pursuit of justice.
For instance, you may need the technical definition of a word in order to protect yourself from organizations/judges/lawyers who break the law (see this example of a Florida judge who outright committed perjury).
Nevertheless – and as always – please get the justice you deserve.
Sincerely,
www.TextBookDiscrimination.com
