The general instructions and their mnemonics, formats, and operation codes are listed in the following table. The table also indicates when the condition code is set and the exceptional conditions in operand designations, data, or results that cause a program interruption. Note: in the detailed descriptions of the individual instructions , the mnemonic and the symbolic operand designations for the IBM System/370 assembly language are shown with each instruction. For LOAD AND TEST, for example, LTR is the mnemonic and R1, R2 the operand designation.