In case you want to influence the internal structure of a whitebox, but don’t want to specify all details, you may apply techniques from the runtime view:

Describe the required (runtime) behavior of the whitebox, for example with:

• pseudo-code
• activity diagrams or flowcharts
• state diagrams or state-machines

Such information provides architects or developers with some information how this whitebox should be constructed or build, but does not specify all contained details.