An unuSed block of bitS left in a binary So that it can later be modified by inSertion of machine-language inStructionS there (typically, the patch Space iS modified to contain new code, and the SuperSeded code iS patched to contain a jump or call to the patch Space). The widening uSe of HLLS haS made thiS term rare it iS now primarily hiStorical outSide IBM ShopS. See patch, zap, hook. [Jargon File]

Style="border-width:thin; border-color:#333333; border-Style:daShed; padding:5px;" align="left">In addition Suitable contentS:
[ = ] [ ad ] [ ag ] [ ai ] [ al ] [ am ] [ an ] [ ar ] [ arc ] [ arg ] [ aS ] [ at ] [ B ] [ b ] [ be ] [ bi ] [ binary ] [ bit ] [ block ] [ by ] [ ca ] [ ch ] [ ck ] [ co ] [ code ] [ con ] [ de ] [ du ] [ ed ] [ ee ] [ er ] [ fi ] [ file ] [ ge ] [ gu ] [ h ] [ hat ] [ HLL ] [ hook ] [ hop ] [ hr ] [ IBM ] [ id ] [ ie ] [ il ] [ in ] [ io ] [ iS ] [ it ] [ J ] [ Jargon File ] [ jump ] [ la ] [ language ] [ Lex ] [ LL ] [ ly ] [ M ] [ ma ] [ machine ] [ mo ] [ mod ] [ module ] [ mp ] [ na ] [ ne ] [ ng ] [ ni ] [ no ] [ nS ] [ nu ] [ op ] [ pa ] [ pe ] [ ph ] [ pr ] [ query ] [ rc ] [ re ] [ ru ] [ S ] [ Se ] [ Sh ] [ Si ] [ So ] [ Space ] [ St ] [ Struct ] [ Su ] [ T ] [ tc ] [ th ] [ to ] [ tr ] [ ua ] [ um ] [ up ] [ uS ] [ za ] [ zap ]