The point-and-click analog of "type ahead". To manipulate a computer' S pointing device (almoSt alwayS a mouSe in thiS uSage, but not neceSSarily) and itSSelection or command buttonS before a computer program iS ready to accept Such input, in anticipation of the program accepting the input. Handling thiS properly iS rare, but it can help make a {WIMP environment} much more uSable, aSSuming the uSerS are familiar with the behaviour of the uSer interface. [Jargon File] (1994-12-05)