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Introduced with [[Windows NT]], an ''[[ANI (file format)|animated pointer]]'' was a small looping animation that was played at the ___location of the pointer.<ref name=atlantic2007>{{cite book | author=Staff | year=2007 | page=24 | title=Encyclopedia Of Information Technology | publisher=Atlantic Publishers & Distributors | isbn=978-81-269-0752-6 }}</ref> This is used, for example, to provide a visual cue that the computer is busy with a task.<ref name=pearson>{{cite book | author=Lock & Philander | year=2009 | editor=Michael Sangster | page=149 | title=FCS Systems Analysis & Design L4 | publisher=Pearson Education South Africa | isbn=978-1-77025-428-2 }}</ref> After their introduction, many animated pointers became available for download from third party suppliers. Animated pointers are not without their problems. In addition to imposing a small additional load on the CPU, the animated pointer routines did introduce a [[security vulnerability]]. A [[client-side]] exploit known as the ''Windows Animated Cursor Remote Code Execution Vulnerability'' used a [[buffer overflow]] vulnerability to load [[malicious code]] via the animated cursor load routine of Windows.<ref name=mcclure_scambray_kurtz2009>{{cite book |author1=McClure, Stuart |author2=Scambray, Joel |author3=Kurtz, George | year=2009 | page=177 | title=Hacking exposed: network security secrets & solutions | issue=6 | edition=6th | publisher=McGraw Hill Professional | isbn=978-0-07-161374-3 }}</ref>
Sometimes, pointer trails can stress or trigger aggression into the user if it's blocking something else.
== 3D cursor ==
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