An ``Interrupt Key Index'' window is usually displayed on the right of the screen while space-time patterns are drawn as a reminder of the various ``on the fly`` options, with subheadings (in red) and the key hit options as shown below. This window can be toggled on-off with the ``x`` key. Some options depend on the current settings. The options as they appear in the window, with some brief explanations, are shown below. Note * indicates that a further explanation is provided in #26.3.
INTERRUPT KEY INDEX
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