An annotation data file in one of the supported custom track formats may be uploaded by any of the following methods:

• Click the "Choose File" button directly above the data text box, then choose a custom track file from your local computer. The custom track data may be compressed by any of the following programs: gzip (.gz), compress (.Z), or bzip2 (.bz2). Files containing compressed data must include the appropriate suffix in their names.
• Paste the custom annotation text directly into data text box.