given Day (1..31). Note that not all months have all days.

This must be used with a timer that broadcasts a maintenance(_,_) message (see broadcast/1). Such a timer is part of library(http/http_unix_daemon).

3.18 Debugging HTTP servers

The library library(http/http_error) defines a hook that decorates uncaught exceptions with a stack-trace. This will generate a 500 internal server error document with a stack-trace. To enable this feature, simply load this library. Please do note that providing error info