Related:

• FEATURE n. A surprising property of a program. Occasionally documented.
  To call a property a feature sometimes means the author did not consider that case, and the program makes an unexpected, though not necessarily wrong response....
• feature n. 1. [common] A good property or behavior (as of a program).
  Whether it was intended or not is immaterial. 2....
• BUG [from telephone terminology, "bugs in a telephone cable", blamed for noisy lines.
  ] n. An unwanted and unintended (and undesirable) property of a program. See FEATURE....
• misbug /mis-buhg/ n. [MIT; rare (like its referent)] An unintended property of a program that turns out to be useful
  something that should have been a bug but turns out to be a feature....
• Bug? That's not a bug, that's a feature. -- T. John Wendel
• Add a feature... Add a bug...
• It's not a bug, it's not a feature, it's an ENHANCEMENT.
• That's not a bug! it's a Free Enhanced Feature!
• That's not a bug! it's an undocumented feature!