Welcome to the IDM Forum. This forum is meant as a user-to-user support mechanism where users can share knowledge and tips for all IDM software.
Since these forums are user-to-user based, IDM does not regularly read or reply to the posts in this forum. For problem reports, suggestions, or feature requests, you must email us directly. Our trained technical support staff answers most inquiries within 30 minutes.
(Reference: http://docsrv.caldera.com:8457/en/KDEdoc/kwrite/pref-edit.html)Groups of similar actions are to be considered a single Undo step by KWrite. In other words, a series of regular character keystrokes (words or expressions) would be considered one step and therefore be removed by a single undo operation. If the series of character entries were interrupted by a non-character entry operation (such as a backspace), invoking undo would only remove the entries made since that operation. The next undo would then reverse that operation and so on.
When this option is not selected KWrite considers each keystroke to be a single step. So if the user (with this option active) were to type several words or even sentences without having to make corrections or cut or paste or some other non-character entry operation then a click of the undo button would eliminate all that had been typed since the last non-entry operation. A second click would eliminate that operation and a third any operation or series of entries that occurred before the operation and so on. When not selected three clicks of the undo button would only remove the last three letters typed, or the last three operations.