FL. R. Civ. P. 1.220
1980 Amendment. The class action rule has been completely revised to bring it in line with modern practice. The rule is based on Federal Rule of Civil Procedure, but a number of changes have been made to eliminate problems in the federal rule through court decisions. Generally, the rule provides for the prerequisites to class representation, an early determination about whether the claim or defense is maintainable on behalf of a class, notice to all members of the class, provisions for the members of the class to exclude themselves, the form of judgment, and the procedure governing dismissal or compromise of a claim or defense maintained on behalf of a class. The prerequisites of subdivision (a) are changed from those in federal rule only to the extent necessary to incorporate the criteria enunciated in Port Royal v. Conboy, 154 So. 2d 734 (Fla. 2d DCA ). The notice requirements have been made more explicit and stringent than those in the federal rule.