stranded

Does anyone know if Chicago electrical code doesn't allow stranded wire in smaller gauges? I always use solid and almost always see solid but still not sure what code says about solid vs stranded.

ARTICLE 310 Conductors for General Wiring 310.1 Scope. This article covers general requirements for conductors and their type designations, insulations, markings, mechanical strengths, ampacity ratings, and uses. These requirements do not apply to conductors that form an integral part of...