Syntax:
set print set print "-" set print "<filename>" set print "<filename>" append set print "|<shell_command>"
Without "4#4filename5#5", the output file is restored to 4#4STDERR5#5. The 4#4filename5#5
"-" means 4#4STDOUT5#5. The append flag causes the file to be opened in append
mode. A 4#4filename5#5 starting with "3#3" is opened as a pipe to the
4#4shell_command5#5 on platforms that support piping.