RALEE is a major mode for the Emacs text editor. It provides functionality to aid the viewing and editing of multiple sequence alignments of structured RNAs. It is extremely immature, but is already proving useful to Rfam people.
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Bioinformatics. 2005 Jan 15;21(2):257-9. Epub 2004 Sep 17.
RALEE–RNA ALignment editor in Emacs.