A complex subscript is an array subscript (or hash key, probably) which is a complicated expression rather than a simple one:

simple:     print $day_of_week[$wday];
complex:  print $day_of_week[ ((localtime($^T))[6] + 4) % 7 ];
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Cuddled elses are elses/elsifs on the same line as the closing "}" from the preceeding "if" statement:

if ($foo) {
    bar;
} else {
    baz;
}
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The style guide actually recommends uncuddled elses where the else is on a separate line from the preceeding "}":

if ($foo) {
    bar;
}
else {
    baz;
}
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