| AttribLin |
$01 |
atom is a member of a chain |
| Attrib347R |
$02 |
atom belongs to a ring of 3, 4, or more than 6 atoms |
| Attrib5R |
$04 |
atom is a member of a ring of 5 atoms |
| Attrib6R |
$08 |
atom is a member of a ring of 6 atoms |
| AttribBranch |
$10 |
branching atom |
| AttribAnyR |
$20 |
atom belongs to a ring of any type |
| AttribTerm |
$40 |
the atom is the last of a chain (terminating atom) |
| AttribCondR |
$80 |
common atom of two condensed rings |
| AttribNone |
$00 |
no attributed defined (none of the above) |