Reversal
A reversal is a reading convention in which a card appearing upside down may be interpreted differently from the same card appearing upright.
Reversal systems vary.
A reversed card may be interpreted as:
blocked;
internalized;
distorted;
delayed;
opposed;
or as another defined alternate meaning.
Not every tarot reader uses reversals, and oracle decks are likewise inconsistent about them.
Reversal is therefore a reading method, not a requirement for tarot or oracle cards.
AngelCards.info does not use reversals.
Every original card already contains:
a constructive expression;
and a caution/shadow expression.
Nuance comes through context and position rather than physical orientation.