Editing Performance indicator (section)

==Points of measurement==
''Performance'' focuses on measuring a particular ''element'' of an ''activity''. An activity can have four elements: input, output, control, and mechanism.{{Citation needed|date=November 2021}} At a minimum, activity is required to have at least an input and an output. Something goes into the activity as an ''input''; the activity transforms the input by changing its ''state'', and the activity produces an ''output''. An activity can also enable ''mechanisms'' that are typically separated into ''human'' and ''system'' mechanisms. It can also be constrained in some way by a ''control''. Lastly, its actions can have a temporal construct of ''time''.

* ''Input'' indicates the inputs required of an activity to produce an output.
* ''Output'' captures the outcome or results of an activity or group of activities.
* ''Activity'' indicates the transformation produced by an activity (i.e., some form of work).
* ''Mechanism'' enables an activity to work (a performer), either human or system.
* ''Control'' is an object that controls the activity's production through compliance.
* ''Time'' indicates a temporal element of the activity.