Small corrections

man/swarm.1

@@ -1,5 +1,5 @@
 .\" ============================================================================
-.TH swarm 1 "December 14, 2015" "version 2.1.6" "USER COMMANDS"
+.TH swarm 1 "February 24, 2016" "version 2.1.6" "USER COMMANDS"
 .\" ============================================================================
 .SH NAME
 swarm \(em find clusters of nearly-identical nucleotide amplicons
@@ -29,17 +29,17 @@ repetitions), as it implies unrealistic numbers of pairwise
 comparisons. \fBswarm\fR is based on a maximum number of differences
 \fId\fR between two amplicons, and focuses only on very close local
 relationships. For \fId\fR = 1 (default value), swarm uses an
-algorithm of linear complexity that performs exact-string matching by
-comparing hash-values. For \fId\fR = 2 or greater, swarm uses an
-algorithm of quadratic complexity that performs pairwise string
-comparisons. An efficient \fIk\fR-mer-based filtering and an astute
-use of comparisons results obtained during the clustering process
-allows to avoid most of the amplicon comparisons needed in a naïve
-approach. To speed up the remaining amplicon comparisons, \fBswarm\fR
-implements an extremely fast Needleman-Wunsch algorithm making use of
-the Streaming SIMD Extensions (SSE2) of modern x86-64 CPUs. If SSE2
-instructions are not available, \fBswarm\fR exits with an error
-message.
+algorithm of linear complexity that generates all possible single
+mutations and performs exact-string matching by comparing
+hash-values. For \fId\fR = 2 or greater, swarm uses an algorithm of
+quadratic complexity that performs pairwise string comparisons. An
+efficient \fIk\fR-mer-based filtering and an astute use of comparisons
+results obtained during the clustering process allows to avoid most of
+the amplicon comparisons needed in a naïve approach. To speed up the
+remaining amplicon comparisons, \fBswarm\fR implements an extremely
+fast Needleman-Wunsch algorithm making use of the Streaming SIMD
+Extensions (SSE2) of modern x86-64 CPUs. If SSE2 instructions are not
+available, \fBswarm\fR exits with an error message.
 .PP
 \fBswarm\fR reads the named input \fIfilename\fR, a fasta file of
 nucleotide amplicons. The amplicon identifier is defined as the string
@@ -296,7 +296,7 @@ Torbjørn Rognes <[email protected]>.
 The software is available from <https://github.com/torognes/swarm>
 .\" ============================================================================
 .SH COPYRIGHT
-Copyright (C) 2012, 2013, 2014, 2015 Frédéric Mahé & Torbjørn Rognes
+Copyright (C) 2012, 2013, 2014, 2015, 2016 Frédéric Mahé & Torbjørn Rognes
 .PP
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU Affero General Public License as
@@ -330,9 +330,9 @@ or minor bug releases are not mentioned):
 .RS
 .TP
 .BR v2.1.6\~ "released December 14, 2015"
-Version 2.1.6 fixes problems with older compilers that do not have
-the x86intrin.h header file. It also fixes a bug in the output of seeds
-with the `-w` option when d>1.
+Version 2.1.6 fixes problems with older compilers that do not have the
+x86intrin.h header file. It also fixes a bug in the output of seeds
+with the `-w` option when \fId\fR > 1.
 .TP
 .BR v2.1.5\~ "released September 8, 2015"
 Version 2.1.5 fixes minor bugs.