XChange UK has announced CtrlChanges, a plug-in for Adobe InDesign and InCopy that helps users spot changes in an InDesign document. Created for situations in which more than one user is working with a document, the plug-in displays both added and removed text in the layout view. The software also provides users with information showing who has made a change, and at what time it was authored. CtrlChanges is available in three different versions: Light, Standard and Pro.

Light supports only basic features, while the Standard version enables printing. Pro introduces several more features, such as filter changes on author and time, separating users with different color markings, and a special panel that displays all of the changes in a document for simpler navigation.

CtrlChanges works with both CS3 and CS4, and is priced at approximately $55 for Light, $215 for Standard and $455 for Pro.