Another family of object files used by the dynamic object loader are the bodytrans(5NEMO) functions. These were actually the first one of this kind introduced in NEMO. They are functions generated from expressions containing body-variables (mass, position, potential, time, ordinal number etc.). They frequently occur in programs where it is desirable to have an arbitrary expression of body variables e.g. plotting and printing programs, sorting program etc. Expressions which are not in the standard repository (currently $BTRPATH or $NEMOOBJ/bodytrans) will be generated on the fly and saved for later use. The program bodytrans(1NEMO) is available to test and save new expressions. Examples are given in Section , a table of the precompiled ones are in Table .