ref: a585e2020387d895c9d185db7a81c76e31031184
dir: /esiglib/
access errstr 0=success, -1=fail print errstr number bytes transmitted (no 0) Brdline errstr pointer to line in buffer, 0=EOF/error The line is not altered in the buffer, use Blinelen to get the length of the line. Blinelen errstr length of line, including delimiter Brdstr errstr malloc'd buffer, null terminated open errstr fd, <0 on fail create errstr fd, <0 on fail close errstr ??? (not described in man page)