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#### 25.1.4.3 Internal Time

Internal time represents time as a single integer, in terms of an implementation-dependent unit called an internal time unit. Relative time is measured as a number of these units. Absolute time is relative to an arbitrary time base.

Figure 25–7 shows defined names related to internal time.

      get-internal-real-time  internal-time-units-per-second
      get-internal-run-time

      Figure 25–7: Defined names involving time in Internal Time.