This project contains documentation for OBO Format

Specification

• obof1.4 spec
  • current version
• obof1.4 guide
• obof1.2 guide

Note that the spec is currently hosted on http://owlcollab.github.io/oboformat/doc/obo-syntax.html -- however, you should be sure to bookmark the permanent URL, which is http://purl.obolibrary.org/obo/oboformat/spec.html

Use this URL:

• http://owlcollab.github.io/oboformat/doc/obo-syntax.html

Code

The code is now integrated into the OWLAPI, version 3.5.x and higher

How to convert

We recommend the use of ROBOT to convert back and forth

See Conversion example:

robot convert --input foo.owl --output foo.obo

OWLTools Command Line Interface can also be used:

owltools foo.owl -o -f obo foo.obo

The use of owltools will be phased out for this purpose in favor of ROBOT

See Also

• From OBO to OWL and back: Building Scalable Ontologies from OBO to OWL and back
• Macros

Legacy documentation

• https://github.com/owlcollab/oboformat/blob/wiki/ProjectHome.md