+=head2 Problems
+
+=over
+
+=item B<problems>
+
+Returns a list of problems in the current contest.
+
+=item B<problem_meta> I<$problem>
+
+Returns a problem's meta.
+
+=item B<set_problem_meta> I<$problem>, I<$meta>
+
+Sets a problem's meta.
+
+=item B<problem_name> I<$problem>
+
+Returns a problem's name.
+
+=item B<set_problem_name> I<$problem>, I<$name>
+
+Sets a problem's name.
+
+=item B<problem_level> I<$problem>
+
+Returns a problem's level. The levels are beginner, easy, medium, hard.
+
+=item B<set_problem_level> I<$problem>, I<$level>
+
+Sets a problem's level. The levels are beginner, easy, medium, hard.
+
+=item B<problem_difficulty> I<$problem>
+
+Returns a problem's difficulty.
+
+=item B<set_problem_difficulty> I<$problem>, I<$name>
+
+Sets a problem's difficulty.
+
+=item B<problem_statement> I<$problem>
+
+Returns a problem's statement.
+
+=item B<set_problem_statement> I<$problem>, I<$statement>
+
+Sets a problem's statement.
+
+=item B<problem_owner> I<$problem>
+
+Returns a problem's owner.
+
+=item B<set_problem_owner> I<$problem>, I<$owner>
+
+Sets a problem's owner.
+
+=item B<problem_author> I<$problem>
+
+Returns a problem's author.
+
+=item B<set_problem_author> I<$problem>, I<$author>
+
+Sets a problem's author.
+
+=item B<problem_private> I<$problem>
+
+Returns a problem's private flag (true if the problem is private, false otherwise).
+
+=item B<set_problem_private> I<$problem>, I<$private>
+
+Sets a problem's private flag.
+
+=item B<problem_generator> I<$problem>
+
+Returns a problem's generator. The generators are File, Run and Undef. More might be added in the future.
+
+=item B<set_problem_generator> I<$problem>, I<$generator>
+
+Sets a problem's generator.
+
+=item B<problem_runner> I<$problem>
+
+Returns a problem's runner. The runners are File, Verifier and Interactive. More might be added in the future.
+
+=item B<set_problem_runner> I<$problem>, I<$runner>
+
+Sets a problem's runner.
+
+=item B<problem_judge> I<$problem>
+
+Returns a problem's judge. The judges are Absolute and Points. More might be added in the future.
+
+=item B<set_problem_judge> I<$problem>, I<$judge>
+
+Sets a problem's judge.
+
+=item B<problem_testcnt> I<$problem>
+
+Returns a problem's test count.
+
+=item B<set_problem_testcnt> I<$problem>, I<$testcnt>
+
+Sets a problem's test count.
+
+=item B<problem_timeout> I<$problem>
+
+Returns a problem's time limit, in seconds.
+
+=item B<set_problem_timeout> I<$problem>, I<$timeout>
+
+Sets a problem's time limit, in seconds.
+
+=item B<problem_olimit> I<$problem>
+
+Returns a problem's output limit, in bytes.
+
+=item B<set_problem_olimit> I<$problem>, I<$olimit>
+
+Sets a problem's output limit, in bytes.
+
+=item B<get_open> I<$problem>, I<$user>
+
+Returns the time when I<$user> opened I<$problem>.
+
+=item B<mark_open> I<$problem>, I<$user>
+
+Sets the time when I<$user> opened I<$problem> to the current time. Does nothing if I<$user> has already opened I<$problem>.
+
+=item B<insert_problem> I<$id>, I<$key> => I<$value>, ...
+
+Inserts a problem with id I<$id> and the given initial configuration. Does nothing if a problem with id I<$id> already exists. Returns true if the problem was added, false otherwise.
+
+=item B<edit_problem> I<$id>, I<$key> => I<$value>, ...
+
+Updates the configuration of a problem. The values of the given keys are updated. All other keys/values are left intact.
+
+=item B<remove_problem> I<$id>
+
+Removes a problem.
+
+=back
+
+=head2 Contests
+
+B<<< WARNING: these functions only work correctly when C<< $Gruntmaster::Data::contest >> is undef >>>
+
+=over
+
+=item B<contests>
+
+Returns a list of contests.
+
+=item B<contest_start> I<$contest>
+
+Returns a contest's start time.
+
+=item B<set_contest_start> I<$contest>, I<$start>
+
+Sets a contest's start time.
+
+=item B<contest_end> I<$contest>
+
+Returns a contest's end time.
+
+=item B<set_contest_end> I<$contest>, I<$end>
+
+Sets a contest's end time.
+
+=item B<contest_name> I<$contest>
+
+Returns a contest's name.
+
+=item B<set_contest_name> I<$contest>, I<$name>
+
+Sets a contest's name.
+
+=item B<contest_owner> I<$contest>
+
+Returns a contest's owner.
+
+=item B<set_contest_owner> I<$contest>, I<$owner>
+
+Sets a contest's owner.
+
+=item B<insert_contest> I<$id>, I<$key> => I<$value>, ...
+
+Inserts a contest with id I<$id> and the given initial configuration. Does nothing if a contest with id I<$id> already exists. Returns true if the contest was added, false otherwise.
+
+=item B<edit_contest> I<$id>, I<$key> => I<$value>, ...
+
+Updates the configuration of a contest. The values of the given keys are updated. All other keys/values are left intact.
+
+=item B<remove_contest> I<$id>
+
+Removes a contest.
+
+=back
+
+=head2 Jobs
+
+=over
+
+=item B<jobcard>
+
+Returns the number of jobs in the database.
+
+=item B<job_results> I<$job>
+
+Returns an array of job results. Each element corresponds to a test and is a hashref with keys B<id> (test number), B<result> (result code, see L<Gruntmaster::Daemon::Constants>), B<result_text> (result description) and B<time> (time taken).
+
+=item B<set_job_results> I<$job>, I<$results>
+
+Sets a job's results.
+
+=item B<job_inmeta> I<$job>
+
+Returns a job's meta.
+
+=item B<set_job_inmeta> I<$job>, I<$meta>
+
+Sets a job's meta.
+
+=item B<job_daemon> I<$job>
+
+Returns the hostname:pid of the daemon which ran this job.
+
+=item B<set_job_daemon> I<$job>, I<$hostname_and_pid>
+
+If the job has no associated daemon, it sets the daemon and returns true. Otherwise it returns false without setting the daemon.
+
+=item B<job_date> I<$job>
+
+Returns a job's submit date.
+
+=item B<set_job_date> I<$job>, I<$date>
+
+Sets a job's submit date.
+
+=item B<job_errors> I<$job>
+
+Returns a job's compile errors.
+
+=item B<set_job_errors> I<$job>, I<$errors>
+
+Sets a job's compile errors.
+
+=item B<job_extension> I<$job>
+
+Returns a job's file name extension (e.g. "cpp", "pl", "java").
+
+=item B<set_job_extension> I<$job>, I<$extension>
+
+Sets a job's file name extension.
+
+=item B<job_filesize> I<$job>
+
+Returns a job's source file size, in bytes.
+
+=item B<set_job_filesize> I<$job>, I<$filesize>
+
+Sets a job's source file size, in bytes.
+
+=item B<job_private> I<$job>
+
+Returns the value of a job's private flag.
+
+=item B<set_job_private> I<$job>, I<$private>
+
+Sets the value of a job's private flag.
+
+=item B<job_problem> I<$job>
+
+Returns a job's problem.
+
+=item B<set_job_problem> I<$job>, I<$problem>
+
+Sets a job's problem.
+
+=item B<job_result> I<$job>
+
+Returns a job's result code. Possible result codes are described in L<Gruntmaster::Daemon::Constants>
+
+=item B<set_job_result> I<$job>, I<$result>
+
+Sets a job's result code.
+
+=item B<job_result_text> I<$job>
+
+Returns a job's result text.
+
+=item B<set_job_result_text> I<$job>, I<$result_text>
+
+Sets a job's result text.
+
+=item B<job_user> I<$job>
+
+Returns the user who submitted a job.
+
+=item B<set_job_user> I<$job>, I<$user>
+
+Sets the suer who submitted a job.
+
+=item B<clean_job> I<$job>
+
+Removes a job's daemon, result code, result text and result array.
+
+=item B<push_job> I<$key> => I<$value>, ...
+
+Inserts a job with a given initial configuration. Returns the id of the newly-added job.
+
+=item B<edit_job> I<$id>, I<$key> => I<$value>, ...
+
+Updates the configuration of a job. The values of the given keys are updated. All other keys/values are left intact.
+
+=item B<remove_job> I<$id>
+
+Removes a job.
+
+=back
+
+=head2 Users
+
+B<<< WARNING: these functions only work correctly when C<< $Gruntmaster::Data::contest >> is undef >>>
+
+=over
+
+=item B<users>
+
+Returns a list of users.
+
+=item B<user_name> I<$user>
+
+Returns a user's full name.
+
+=item B<set_user_name> I<$user>, I<$name>
+
+Sets a user's full name.
+
+=item B<user_email> I<$user>
+
+Returns a user's email address.
+
+=item B<set_user_email> I<$user>, I<$email>
+
+Sets a user's email address.
+
+=item B<user_lastjob> I<$user>
+
+Returns the time (seconds since epoch) when the user last submitted a solution.
+
+=item B<set_user_lastjob> I<$user>, I<$lastjob>
+
+Sets the time (seconds since epoch) when the user last submitted a solution.
+
+=item B<user_town> I<$user>
+
+Returns a user's town.
+
+=item B<set_user_town> I<$user>, I<$town>
+
+Sets a user's town.
+
+=item B<user_university> I<$user>
+
+Returns a user's university/highschool/place of work/etc.
+
+=item B<set_user_university> I<$user>, I<$university>
+
+Sets a user's university, highschool/place of work/etc.
+
+=item B<user_level> I<$user>