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jit.qball	External		Convert messages at scheduler time to low priority The jit.qball object places all messages received at scheduler time in the low priority queueö‘even if overdrive is turned off. This is useful for event synchronization and/or graceful data rate reduction (e.g. drop video frames, or drawing commands in the event that they may not be rendered as fast as requested).
qlim	External		Queue based speedlim The qlim object is similar to a combination of speedlim and jit.qball. In Jitter, most execution take places in the low priority queue to prevent drawing to the screen at interrupt. The speedlim object unfortunately places messages back in the scheduler for execution, and thus may result in a crash when used to temporally downsample streams of Jitter matrices if overdrive is turned on. The qlim object is an interrupt safe replacement for this and other tasks.
qmetro	External		Queue based metronome The qlim object is similar to a combination of metro and jit.qball. In Jitter, most execution take places in the low priority queue to prevent drawing to the screen at interrupt. Most objects also support automatic "drop-framing" in order to keep up with realtime if the requested operation cannot be calculated in realtime. Certain things like OpenGL drawing commands are not suitable for this kind of "dropframing" and instead, the metronome driving such events must be "dropframed" using jit.qball in order to ensure that they will not backlog the queue. The qmetro is a single object replacement for this functionality.
qmetro	External		A queue-based metronome. like metro -> jit.qball.
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