Acronym for Off-Line Editor. A program that simulates a Lighting Console on one's personal computer. The first was ETCedit for the Vision and original Expression. Today, almost every console manufacturer offers an editor, which is a great way to become familiar with a console without the expense. Often one can have an OLE and Visualizer running on the same or networked computers, and actually pre-program a good portion of the more tedious tasks in the comfort of one's home. Having already performed functions such as inputting the patch, building groups/ presets/ palettes, setting screen views, etc., allows the operator/programmer to concentrate on actually lighting the show once he is "given the rig" onsite in the venue. Specific examples are included in the Collaborative Article Off-line Editors for Lighting Consoles. All but the most basic of consoles offer an offline editor. In some cases it's the exact same software that the console uses, especially in the case of PC controls, but a dongle may be required to actually output DMX512 to the stage.