The cycle history is seen at the top of the display. It looks like a growing progress bar filled with a changing pattern. The cycle history shows a large number of recent cycles, in a compact and re-arranged manner: The horizontal axis corresponds to time, with the 'past' on the left and 'present' on the most right. The vertical direction corresponds to the cycle position, from 'cycle start' on the top to 'cycle end' at the bottom. Colours correspond to the cycle values as displayed in the cycle waveform.

Hint: the animated white cursors in the cycle waveform (bottom) and the cycle history (top) illustrate how these two visualisations relate to each other.

The ancient Greek word for "examine" is skopein, the Latin word for "viewing instrument" is scopium. In analogy to telescope, microscope and oscilloscope the canonical name for a viewing instrument to examine cycles is therefore cycloscope.

The first use of this word we are aware of was by Dr.A.E.Douglas who invented an optico-mechanical instrument visualising cycles occurring in quasi-periodic phenomena. (Douglas A.E., 1936, Climatic cycles and tree growth, Carnegie Institution of Washington, Pub. No. 289,3).

The speed with which the cycle history grows depends on the display settings. Refer to Menu->Settings->Monitoring->Display Duration. The examples bundled with the online demo are changing this setting automatically to values between 2-12 minutes, hence the variation in growth rate.