1. In a digital computer system including processor means for performing operations on operands, memory means for storing said operands and procedures, said procedures including instructions for controlling said operations and names referring to said operands, bus means for conducting at least said instructions between said memory means and said processor means, and I/O means for conducting at least said operands between devices external to said digital computer system and said processor means, said processor means comprising: first microcode means responsive to said instructions and connected from said bus means comprising means for storing first sequences of microinstructions and means employing said first sequences of microinstructions for controlling at least said operations of said processor means as directed by said instructions, at least one sequence of microinstructions of said first sequences of microinstructions corresponding to each one of said instructions and said instructions being S-language instructions having a uniform, fixed format, and second microcode means responsive to the operation of said processor means and connected from said bus means comprising means for storing second sequences of microinstructions and means employing said second sequences of microinstructions for controlling internal operations of at least said processor means, and means responsive to said procedures for addressing said operands, including: name table means for storing name table entries, each one of said name table entries corresponding to one of said names associated with one of said instructions included in one of said procedures and said each one of said name table entries comprising (1) first data resolvable to provide a location in said memory means of one of said operands referred to by said corresponding one of said names, and, (2) second data identifying the format of said operand referred to by said corresponding one of said names, means connected from said bus means and responsive to said names for reading said name table entries corresponding to said names from said name table means, and means connected from said reading means for resolving each one of said name table entries for providing outputs to said memory means representing said locations in said memory means of said operands referred to by said names read from said memory means.