ZONE and ATOMS
commands to specify which residues and atoms should be included in the
fitting, the RMS deviation may then be calculated over a different
region of the structure and/or a different atom set.
This is achieved using the RZONE and RATOMS
commands. The syntax of these commands is identical to that of the
ZONE and ATOMS commands described in
Sections 6 and 7.
As each RZONE or RATOMS command is given, the RMS
deviation is reported over the new set of zones or over the new atom
set. Don't forget the RZONE commands are cummulative, like the
ZONE commands. Note that the RZONE * or RZONE
CLEAR behaves slightly differently from ZONE * or
ZONE CLEAR since it resets the zones to be the same as
those specified for the fitting using ZONE, ALIGN or
READALIGNMENT commands.