...internal text message, the system error code in one of the following styles: message ... (errno: #) message ... (Errcode: #) You can find out what the error code means by examin…format manual pages NAME mandoc — format manual pages SYNOPSIS mandoc [ -ac ] [ -I os = name ] [ -K encoding ] [ -mdoc | -man ] [ -O options ] [ -T output ] [ -W level ] [ file ...…...modifiers, internal commands, environment variables, function names, preprocessor macros, errno(2) values, and some other emphasized words. Some terms may have defining text at …...y is indexed by the environment variables, each element being the value of that variable. ERRNO If a system error occurs either doing a redirection for getline , during a read f…...y is indexed by the environment variables, each element being the value of that variable. ERRNO If a system error occurs either doing a redirection for getline , during a read f…...y is indexed by the environment variables, each element being the value of that variable. ERRNO If a system error occurs either doing a redirection for getline , during a read f…...pecified 3 unrecognized terminal type 4 unrecognized capability code >4 system error (4 + errno ) When the -S option is used, some statuses change meanings. Status Meaning When …