All activation inputs and outputs in Embrio record their recent values. By clicking the graph icon next to an input or output, you can see the recorded values as a graph. This helps to understand what is happening in your real time project. To further help, there is a playback control on the bottom of the application. To start playback mode, either click on the playback icon, or press the s key on your keyboard. When playback mode is activated, the node screen background becomes red, and the interface stops updating with new data. You can click and drag on the playback slider to restore the past values of all nodes in the project. The buttons on the playback controller are the same as on a video playback device. The first button jumps to the beginning of the recorded time. Next you can step a frame back. On the other side of the timeline indicator is a play button, which plays back the data in real time, and then turns into a pause button which stops the playback. Next are a frame forward and jump to end button.
The A S D W keys on the keyboard are hotkeys for these buttons. By pressing A and D you can step forward and backward. W toggles play and pause. Q and E jump to the beginning and end of the recorded time, and S toggles playback mode. The default amount of time to record is 10 seconds, but you can change that with the drop down box. Note that changing the playback range clears the memory.