# version

`version` is a string that represents the format of the subscription list. It always exists, although it may be an empty string if the subscription list format is not recognized.

These are the possible values:

opml1

  OPML 1.0 and 1.1 [1]

opml2

  OPML version 2.0

opml

  An OPML file with an unknown or unspecified version

rdf

  RDF+FOAF

igoogle

  iGoogle exported settings format [2]

Footnotes

[1]

OPML 1.1 files are treated as OPML 1.0 files.

In 2001, Dave Winer announced that OPML 1.1 would include a `<cloud>` tag. In 2005, the original announcement was modified to state that the project was dropped, and included this message:

> [If] you see an OPML 1.1 file, you should treat it like an OPML 1.0 file. That’s it. Enjoy!

[2]

How to export your iGoogle page settings