-- data Exp = ...
varEIdKey, conEIdKey, litEIdKey, appEIdKey, infixEIdKey, infixAppIdKey,
sectionLIdKey, sectionRIdKey, lamEIdKey, tupEIdKey, condEIdKey,
-- data Exp = ...
varEIdKey, conEIdKey, litEIdKey, appEIdKey, infixEIdKey, infixAppIdKey,
sectionLIdKey, sectionRIdKey, lamEIdKey, tupEIdKey, condEIdKey,