History tracking and edit operation. Two History windows show how the transcript changed between edit operations. Each History entry shows the edit operation, the user who made the edit, and the date. The top window shows the transcript after merging of two exons and the one below shows the transcript after an exon has been deleted. Users can click on different History entries, which will display how the transcript looked at that point in time.
Lee et al. Genome Biology 2013 14:R93 doi:10.1186/gb-2013-14-8-r93