Document formats are not only able to store chemical information but graphical properties ( e.g. atom, bond color, font size, type, etc), and objects such as text box or line as well. Document Formats
Marvin Documents - MRV
MRV Export Options
Schema and Validation
Chemaxon Object Notation - CXON
ISISDraw sketch file - SKC
Features imported from SKC files
Features exported to SKC format
ChemDraw sketch file - CDX, CDXML
Features imported from CDX and CDXML files
Features exported to CDX