===EDITING KEYS ===
These are defaults, which can be redefined. Note that while
entering text on the command line, some of these control keys take on
text editing functions instead (CTRL - A, E, and K, and DELETE), so
you should clear the command line before trying to edit atoms.
ATOM REPLACEMENT
CTRL-C Replace picked atom with carbon (C)
CTRL-N Replace picked atom with nitrogen (N)
CTRL-O Replace picked atom with oxygen (O)
CTRL-S Replace picked atom with sulpher (S)
CTRL-G Replace picked atom with hydrogen (H)
CTRL-F Replace picked atom with fluorene (F)
CTRL-L Replace picked atom with chlorine (Cl)
CTRL-B Replace picked atom with bromine (Br)
CTRL-I Replace picked atom with iodine (I)
ATOM MODIFICATION
CTRL-J Set charge on picked atom to -1
CTRL-K Set charge on picked atom to +1
CTRL-D Remove atom or bond (DELETE works too).
CTRL-Y Add a hydrogen to the current atom
CTRL-R Adjust hydrogens on atom/bond to match ..→