[QTI] "external" variables

[Manolis Mavrikis]

Dear all,

   it's being a while since I did some work with QTI so apologies for  
the question but I looked in archives and the spec and can't seem to  
find a good answer to my question or a justification for the absence  
of the following requirement.

   I am wondering if the spec itself or the requirements for delivery  
engines define a way to allow the engine to send some parameters (e.g.  
values for variables) to the item. That is, if there is a way to  
define variables in some specific way that lets the engine know that  
it needs to set a value to this variable.

   This is often needed if I require some combination of external  
input required to adapt an exercise. As far as I understand this is  
not the same as defining the variable and setting its value to NULL  
for example because my engine wouldn't know that the exercise requires  
this value to be set externaly.

   Thanks for your answer in advance,

Manolis




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