| Transparency of services: each service needed for the current
set of tasks has a uniform functionality over all considered workcontexts.
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| Invariance of workspace: when moving between workcontexts the
workspace should be preserved.
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| Hiding of the technical complexity of workcontexts.
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| Robustness and availability of terminal artifacts.
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| Homogenization and availability of communication capacity.
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| Adaptivity of services: the software services should compensate
for the shortcomings and utilize the strengths of particular workcontexts.
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