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<b>Declare another class as neighbor</b>.

<p>

!href cmd=help&special_parm=neighbor Neighborhood relation

 between two classes will be effective only when

supervisors of both classes declare the other as its neighbor, either for

supervisor, for participants, or for both.

</p><p>

Although the principle is that people from a neighboring class can never

modify your class (unless they are

!href cmd=help&special_parm=share sharing teaching materials

 with you), you should

declare another class as neighbor only if you can trust its supervisor.

</p><p>

By declaring a class as your neighbor for supervisor, you are allowing the

latter to

!href cmd=help&special_parm=import import

 teaching materials from your class. That means that he will gain access to possible

sensible data of your class, such as hidden worksheets or exercises. Make sure

that he will not reveal these data back to your participants.

</p><p>

What's more, by importing participant accounts from your class, the

supervisor of your neighbor may have means to read personal passwords of

your participants. (This fact is also true if you declare the other class as

your neighbor for participants.) Make sure that he will keep them secret.

</p><p>

In order to keep security level as high as possible, the principle is that

you declare neighborhood of another class only when it is really necessary.

</p>