Type: boolean
Default: no
Used in connection with the print-message command. If this option is set, the command specified by $print_command is executed once for each message which is to be printed. If this option is unset, the command specified by $print_command is executed only once, and all the messages are concatenated, with a form feed as the message separator.
Those who use the enscript(1) program's mail-printing mode will most likely want to set this option.