The Reverb Editor Window
When a reverb preset file (*.aecr) is opened in the DCP Access Tool it will open in a reverb Editor window. A reverb Editor Window allows adjustment of all the DSP parameters of one reverb preset. It also acts as a "remote control" for the DSP in that any changes to the on-screen controls are transmitted to the connected DCP (if any) in real time so that DSP adjustments can be previewed "live". Here's what a reverb editor window looks like:
The controls in the reverb editor work like their counterparts in the cymbal editor. The parameters should be pretty self-explanatory.
See also: Editing Presets, Cymbal Editor Window