You can draw link nodes using the contextual popup menu in two ways:
The Link Node submenu can be reach fro the Atom menu as well.
If it is not possible to create a link node for the specified configuration (for example at ring fusions) an error message is thrown.
Outer (non-repeating) bonds will be denoted by brackets crossing them, and the repetition numbers will be put on the atom.
All portion of the molecule connected to the link atom through non-outer bonds are supposed to repeat together with the atom.
See examples below.
|Molecule with link node||Meaning|
To edit a link node repetition number or change outer bonds, repeat the drawing steps above.
To make a link atom ordinary atom again, select Off from the Link node submenu or more simply, it can be overwritten.