8. Conclusions
It follows from above that data structure presented is able to store all
information we need. It is for example possible to include more
types of representation into the list in one cell, e.g. several height
fields with
different resolutions, both structured grid and its approximation with
height field, etc. Everything depends on the implementation of tools for
work with this structure. Next advance of the structure is its openess for
including other information---it is needed only to add new type of list
item; if a particular tools implementation cannot work with this type of
item, it can just ignore it (so it is not necessary to change tools
implementation by adding new feature).
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