Sometimes not all outputs of a multi-function are required by the caller. In those cases it would be a waste of compute resources to calculate the unused values anyway. Now, the caller of a multi-function can specify when a specific output is not used. The called function can check if an output is unused and may ignore it. Multi-functions can still computed unused outputs as before if they don't want to check if a specific output is unused. The multi-function procedure system has been updated to support ignored outputs in call instructions. An ignored output just has no variable assigned to it. The field system has been updated to generate a multi-function procedure where unused outputs are ignored.