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Download - Educational Technology & Society

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Symbol<br />

Behavior when double-clicked<br />

Behavior when following a<br />

hyperlink<br />

Symbol<br />

Table 2. Scene<br />

• opening a document (*.doc, *.pdf, *.wav, *.vsd, *.ppt, *.xls, etc.)<br />

• nothing, if just a verbally described scene<br />

• opening a document (*.doc, *.pdf, *.wav, *.vsd, *.ppt, *.xls, etc.)<br />

• visiting a website with the standard browser, if it is a URL<br />

• opening the standard mail tool, if it is an e-mail address<br />

Table 3. Episode<br />

Behavior when double clicked • opening the sub-graph that specifies the episode<br />

Behavior when following a<br />

hyperlink<br />

Symbol<br />

• opening a document (*.doc, *.pdf, *.wav, *.vsd, *.ppt, *.xls , …)<br />

• visiting a website with the standard browser, if it is an URL<br />

• opening the standard mail tool, if it is an e-mail address<br />

Table 4. Start node<br />

Behavior when double-clicked jumping to the start node of the related graph<br />

Behavior when following a<br />

hyperlink<br />

not applicable<br />

Symbol<br />

Table 5. End node<br />

Behavior when double-clicked jumping to the reference node that succeeds the associated episode node<br />

in the related graph<br />

Behavior when following a not applicable<br />

hyperlink<br />

Symbol<br />

start<br />

Table 6. Reference node<br />

Behavior when double-clicked jumping to the end node of the sub-graph that is associated with the<br />

preceding episode node<br />

Behavior when following a not applicable<br />

hyperlink<br />

End<br />

For edges, it is not meaningful to define double-click actions or hyperlinks. The edges are not intended to carry<br />

subject content, but are intended to carry didactics of a mandatory, conditioned, or recommended switch between the<br />

nodes of the graph. However, the way that the sequence of nodes is defined by edges needs to be defined,<br />

particularly in the case of alternatives and forks. As introduced above, there is a rule that an outgoing edge of a node<br />

should have the same starting color as the incoming edge of the node. This serves to express conditions for leaving a<br />

node that refers to the incoming edge. The sequence of node traversing is defined as specified in Table 7 through<br />

Table 10.<br />

317

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