-creating user accounts: start with userlist, create passwd items and passwords; replace CT_UID_xxx completely?
-fix mo-* to use mo-get-users
-post-sandbox hook
-
-guide: compile <file>, not only <task>
-guide: status
-guide for CPSPC: stdio, not files, should be used for I/O
+terminology: problem -> task ?
+writing of verdicts to stdout (include timing and check on interactive tasks, including judge errors)
+box: memory usage statistics (need to search for VMPeak in /proc/$PID/status, but it disappears too early)