9. A system for translating statements in a computer program, comprising: a processor; a computer readable storage device including a translator executed by the processor to perform operations, the operations comprising: processing a first mnemonic command specifying a mnemonic and a user defined definition; indicating a first interpretation using the user defined definition for the mnemonic specified in the first mnemonic command; processing a first instance of the mnemonic in the computer program after indicating the first interpretation and interpreting the first instance of the mnemonic according to the user defined definition of the first interpretation; processing a second mnemonic command specifying the mnemonic and a translator definition after interpreting the first instance of the mnemonic according to the user defined definition; indicating a second interpretation using the translator definition for the mnemonic specified in the second mnemonic command; and processing a second instance of the mnemonic in the computer program after indicating the second interpretation and interpreting the second instance of the mnemonic according to the translator definition of the second interpretation.
11. The system of claim 9 , wherein the first and second mnemonic commands have a global scope to apply to all instances of the mnemonic in the computer program, with an exception for subsequent mnemonic commands for the mnemonic that override the mnemonic command for the mnemonic having the global scope.