Pattern specification for Log4perl log messages

Pattern specification for Log4perl log messages:
http://search.cpan.org/~mschilli/Log-Log4perl-1.32/lib/Log/Log4perl/Layout/PatternLayout.pm

xemacs mode line

How to interpret the status line in xemacs:
http://www.xemacs.org/Documentation/21.5/html/xemacs_4.html#SEC10

GNU info

navigate within info screens:

b	go to beginning of the page
?	help
m	choose a menu item from the current page (has tab completion)
f	choose a cross-reference to follow (tab completion)
f?	list all cross-references on the current page
l	go back to last page
Ctrl-g	cancel menu command
i	search index for topic
d	directory of all info pages
t	go to 'top' of current manual
s	search forward
q	quit info screen

To get to the page denoted by auditd(8), type

man 8 auditd

Everybody do the DBI

  use DBI;

@driver_names = DBI->available_drivers;
%drivers      = DBI->installed_drivers;
@data_sources = DBI->data_sources($driver_name, \%attr);

$dbh = DBI->connect($data_source, $username, $auth, \%attr);

$rv  = $dbh->do($statement);
$rv  = $dbh->do($statement, \%attr);
$rv  = $dbh->do($statement, \%attr, @bind_values);

$ary_ref  = $dbh->selectall_arrayref($statement);
$hash_ref = $dbh->selectall_hashref($statement, $key_field);

$ary_ref  = $dbh->selectcol_arrayref($statement);
$ary_ref  = $dbh->selectcol_arrayref($statement, \%attr);

@row_ary  = $dbh->selectrow_array($statement);
$ary_ref  = $dbh->selectrow_arrayref($statement);
$hash_ref = $dbh->selectrow_hashref($statement);

$sth = $dbh->prepare($statement);
$sth = $dbh->prepare_cached($statement);

$rc = $sth->bind_param($p_num, $bind_value);
$rc = $sth->bind_param($p_num, $bind_value, $bind_type);
$rc = $sth->bind_param($p_num, $bind_value, \%attr);

$rv = $sth->execute;
$rv = $sth->execute(@bind_values);
$rv = $sth->execute_array(\%attr, ...);

$rc = $sth->bind_col($col_num, \$col_variable);
$rc = $sth->bind_columns(@list_of_refs_to_vars_to_bind);

@row_ary  = $sth->fetchrow_array;
$ary_ref  = $sth->fetchrow_arrayref;
$hash_ref = $sth->fetchrow_hashref;

$ary_ref  = $sth->fetchall_arrayref;
$ary_ref  = $sth->fetchall_arrayref( $slice, $max_rows );

$hash_ref = $sth->fetchall_hashref( $key_field );

$rv  = $sth->rows;

$rc  = $dbh->begin_work;
$rc  = $dbh->commit;
$rc  = $dbh->rollback;

$quoted_string = $dbh->quote($string);

$rc  = $h->err;
$str = $h->errstr;
$rv  = $h->state;

$rc  = $dbh->disconnect;