Infernal ("INFERence of RNA ALignment") is for searching DNA sequence
databases for RNA structure and sequence similarities. It is an
implementation of a special case of profile stochastic context-free
grammars called covariance models (CMs). A CM is like a sequence
profile, but it scores a combination of sequence consensus and RNA
secondary structure consensus, so in many cases, it is more capable of
identifying RNA homologs that conserve their secondary structure more
than their primary sequence.
This package provides the documentation which is shipped with the
code of infernal.