  Interior perfect fluid solutions for the Reissner-Nordstrom metric are
studied on the basis of a new classification scheme. It specifies which two of
the fluid's characteristics are given functions and picks up accordingly one of
the three main field equations, the other two being universal. General formulae
are found for charged de Sitter solutions, the case of constant energy
component of the energy-momentum tensor, the case of known pressure (including
charged dust) and the case of linear equation of state. Explicit new global
solutions, mainly in elementary functions, are given as illustrations. Known
solutions are briefly reviewed and corrected.
