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Guenter Hilmer - Phd Thesis - Glamorgan Dspace - University of ...

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3.4 EFTECS at EHP-Layer 3 EFTECS<br />

hypermedia elements at different locations on the WWW. The location <strong>of</strong><br />

the different EHPs at different locations throughout the WWW is therefore<br />

guaranteed.<br />

• MEDIATYPE<br />

At the lowest level <strong>of</strong> the EFTECS it is important for the authoring tool to<br />

know with which kind <strong>of</strong> hypermedia it is working. This allows different<br />

ways <strong>of</strong> using text, video, audio and so on.<br />

• PREFERRED APPLICATION<br />

To display or use the EHPs in the best possible way it is important to know<br />

which application should be used, for example a hypermedia educational<br />

authoring tool, a specific video player or a third party application such as<br />

Apple Quicktime for specific videos.<br />

3.4.2 Domain information<br />

The domain information <strong>of</strong> the EHP allows the EFTECS to create an efficient<br />

structure for the content space. It is necessary to know which topic or domain<br />

the material is from. For this version <strong>of</strong> the EFTECS only three levels <strong>of</strong> domain<br />

information were created. However, if it turns out that three structure levels are<br />

not enough, the EFTECS can easily be extended by additional domain information<br />

layers.<br />

• TOPLEVEL<br />

The toplevel information <strong>of</strong> the EHP provides the basic domain information<br />

<strong>of</strong> the EHP, e.g. programming.<br />

• SUBLEVEL<br />

The sublevel information <strong>of</strong> the domain allows a more detailed description<br />

<strong>of</strong> the domain <strong>of</strong> the EHP, e.g. C++ programming.<br />

• SUBSUBLEVEL<br />

The lowest level <strong>of</strong> the domain information, the sub-sublevel, provides the<br />

EFTECS with the finest description <strong>of</strong> the domain <strong>of</strong> the EHP, e.g. pointers.<br />

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