An undocumented feature is an unintended or undocumented hardware operation, for example an undocumented instruction, or software feature found in computer hardware and software that is considered beneficial or useful. Sometimes the documentation is omitted through oversight, but undocumented features are sometimes not intended for use by end users, but left available for use by the vendor for software support and development. Also, some unintended operation of hardware or software that ends up being of utility to users is simply a bug, flaw or quirk.
An undocumented feature is an unintended or undocumented hardware operation for example an undocumented instruction or software feature found in computer hardware and software that is considered beneficial or useful Sometimes the documentation is omitted through oversight but undocumented features are sometimes not intended for use by end users but left available for use by the vendor for software support and development Also some unintended operation of hardware or software that ends up being of utility to users is simply a bug flaw or quirk