RM D 8 47-49 Monotonic Time (GNAT Reference Manual)

### 6.56 RM D.8(47-49): Monotonic Time ¶

> “When appropriate, implementations should provide configuration mechanisms to change the value of `Tick`.”

Such configuration mechanisms are not appropriate to this implementation and are thus not supported.

> “It is recommended that `Calendar.Clock` and `Real_Time.Clock` be implemented as transformations of the same time base.”

Followed.

> “It is recommended that the best time base which exists in the underlying system be available to the application through `Clock`. Best may mean highest accuracy or largest range.”

Followed.