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-rw-r--r--doc/pdlzip.124
1 files changed, 18 insertions, 6 deletions
diff --git a/doc/pdlzip.1 b/doc/pdlzip.1
index e971323..e160d37 100644
--- a/doc/pdlzip.1
+++ b/doc/pdlzip.1
@@ -1,14 +1,26 @@
.\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.46.1.
-.TH PDLZIP "1" "February 2018" "pdlzip 1.9" "User Commands"
+.TH PDLZIP "1" "January 2019" "pdlzip 1.10" "User Commands"
.SH NAME
pdlzip \- reduces the size of files
.SH SYNOPSIS
.B pdlzip
[\fI\,options\/\fR] [\fI\,files\/\fR]
.SH DESCRIPTION
-Pdlzip \- A permissively licensed implementation of the lzip data
-compressor also able to decompress legacy lzma\-alone (.lzma) files.
+Pdlzip is a permissively licensed implementation of the lzip data
+compressor, intended for those who can't distribute (or even use) GPL
+licensed Free Software. (The name of pdlzip comes from 'public domain
+lzip'). Pdlzip is written in C and is (hope)fully compatible with lzip 1.4
+or newer.
.PP
+Lzip is a lossless data compressor with a user interface similar to the
+one of gzip or bzip2. Lzip can compress about as fast as gzip (lzip \fB\-0\fR)
+or compress most files more than bzip2 (lzip \fB\-9\fR). Decompression speed is
+intermediate between gzip and bzip2. Lzip is better than gzip and bzip2
+from a data recovery perspective. Lzip has been designed, written and
+tested with great care to replace gzip and bzip2 as the standard
+general\-purpose compressed format for unix\-like systems.
+.PP
+Pdlzip is also able to decompress legacy lzma\-alone (.lzma) files.
Lzma\-alone is a very bad format; it is essentially a raw LZMA stream.
If you keep any lzma\-alone files, it is advisable to recompress them to
lzip format. Lziprecover can convert some lzma\-alone files to lzip format
@@ -57,11 +69,11 @@ test compressed file integrity
\fB\-v\fR, \fB\-\-verbose\fR
be verbose (a 2nd \fB\-v\fR gives more)
.TP
-\fB\-1\fR .. \fB\-9\fR
+\fB\-0\fR .. \fB\-9\fR
set compression level [default 6]
.TP
\fB\-\-fast\fR
-alias for \fB\-1\fR
+alias for \fB\-0\fR
.TP
\fB\-\-best\fR
alias for \fB\-9\fR
@@ -91,7 +103,7 @@ Report bugs to lzip\-bug@nongnu.org
.br
Pdlzip home page: http://www.nongnu.org/lzip/pdlzip.html
.SH COPYRIGHT
-Copyright \(co 2018 Antonio Diaz Diaz.
+Copyright \(co 2019 Antonio Diaz Diaz.
Public Domain 2009 Igor Pavlov.
License 2\-clause BSD.
.br