Volume 2 Chapter 5 Edit Menu EDIT-REP
These options allow you to alter the element types of atoms - normally applied to individual atoms.
Example
Suppose we have constructed the fragments in (i) - see below.

Suppose we wish to change the O atom to S.
Select S
Please use the cursor to select an ATOM (Select another command to end ELEMENT editing)
The fragment is now as in (ii)

Suppose WHOLE was active in (i)
The fragment is now as in (iii)
