USEARCH commands

	usearch_global		Very fast search for high-identity top hit or hits (global alignments).
	usearch_local		Very fast search for high-identity top hit or hits (local alignments).
	ublast		Fast and sensitive search to low identities (local alignments).
	search_global		Comprehensive search (global alignments).
	search_local		Comprehensive search (local alignments).
	cluster_fast		Clustering optimized for speed.
	cluster_smallmem		Clustering optimized for reduced memory use.
	maskfasta		Mask low-complexity regions.
	derep_fulllength		Remove duplicated sequences (full-length matches).
	derep_prefix		Remove duplicated sequences (prefix matches).
	uchime_ref		Chimera filter using reference database.
	uchime_denovo		Chimera filter amplicon sequences de novo.
	pairs_local		Align consecutive pairs 1&2, 3&4 ... N-1&N (local).
	pairs_global		Align consecutive pairs 1&2, 3&4 ... N-1&N (global).
	allpairs_local		Pairwise align all vs. all (local).
	allpairs_global		Pairwise align all vs. all (global).
	sortbylength		Sort sequences by decreasing length.
	sortbysize		Sort sequences by decreasing size=N; value in label.
	makeudb_usearch		Create a UDB database from a FASTA file for usearch commands.
	makeudb_ublast		Create a UDB database from a FASTA file for ublast command.
	uc2fasta		The uc2fasta and uc2fastax commands are not supported in v6 (see here for discussion).
	udb2fasta		Convert UDB database to FASTA.
	udbinfo		Report UDB file header information.
	udbstats		Report UDB index statistics.
	findorfs		Find open reading frames (ORFs) in nucleotide sequences.
	version		Show long name with version and platform.