Changes in version 1.23: Decompression time has been reduced by 5-12% depending on the file. In case of error in a numerical argument to a command line option, lziprecover now shows the name of the option and the range of valid values. Options '--dump' and '--strip' now refuse to write compressed data to a terminal except when dumping trailing data with '--dump=tdata'. The option '-U, --unzcrash' now requires an argument: '1' to test 1-bit errors, or 'B' to test zeroed blocks. The memory tester now allocates the dictionary once per member instead of doing it for each test. This makes '-U, --unzcrash' about two times faster on my machine on files with an uncompressed size larger than about 30 MB. '-W, --debug-decompress' now continues decompressing the members following the damaged member if it has been fully decompressed (just failed with a CRC mismatch). The tool unzcrash now uses execvp instead of popen to avoid invoking /bin/sh and run faster. It also prints byte or block position in messages. Several descriptions have been improved in manual, '--help', and man page. The texinfo category of the manual has been changed from 'Data Compression' to 'Compression' to match that of gzip. (Reported by Alfred M. Szmidt).