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Line notation 
Summary
Line notation is a typographical notation system using ASCII characters, most often used for chemical nomenclature.
Chemistry edit
- Cell notation for representation of an electrochemical cell
- Dyson / IUPAC (1944)
- Hayward (1961)
- International Chemical Identifier (InChI)
- Wiswesser Line Notation (WLN) (1952)
- Simplified molecular input line entry specification (SMILES)
- Smiles arbitrary target specification (SMARTS)
- SYBYL Line Notation (SLN)