The necessary symmetry information is added to the database of molecule A27 by the following example
symm_setup a27 96.8 112.3 55.0 90. 90. 90. p212121
If the datablock describing your space group does not exist in $ODAT/symm, then use the p212121.o file as an example. Remember to include any centring operators as explicit operations.
The following example generates symmetry atoms for molecule A27.
symm_sph a27 sym 10.
Any residue with its centre of gravity 10Å from the current screen centre (as defined by .active_centre) will appear on the screen. These may be from a number of different symmetry related molecules. Each object is named after the symmetry molecule's name. The first symmetry molecule would be called SYM1, the next SYM2, etc.