illinois's legal system is based on common law, which is interpreted by case law through the decisions of the supreme court of illinois and the illinois appellate court. the official reporter for opinions of the supreme court and the appellate court are published on the website of the illinois supreme court using a public domain case citation. there are also unofficial sources such as west's "illinois decisions" (an illinois-specific version of the "north eastern reporter") with opinions since 1886. illinois appellate court decisions from before 1935 are not binding. illinois circuit court decisions are not published, but jury verdicts and settlements are published in the monthly "illinois jury verdict reporter", with regular updates from the "chicago daily law bulletin", and the weekly "cook county jury verdict reporter". decisions of the illinois court of claims are published in the "court of claims reports".