Checker searches for brackets. Brackets are usually associated with generic S-groups.
Fixer offers removing brackets (removebrackets).
Example :
| Brackets Checker (brackets) | Warning: | Fix | 
|---|---|---|
| Remove Brackets (removebrackets) | ||
| Detect brackets | ![]()  | 
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Note: Checker does not detect brackets denoting polymers and mixtures. Graphical brackets (brackets not related to S-groups) are not detected.

