Set BondMode

Syntax:  set bondmode and
         set bondmode or

The RasMol set bondmode command controls the mechanism used to select individual bonds. When using the select and restrict commands, a given bond will be selected if i) the bondmode is or and either of the connected atoms is selected, or ii) the bondmode is and and both atoms connected by the bond are selected. Hence an individual bond may be uniquely identified by using the command "set bondmode and" and then uniquely selecting the atoms at both ends.