i guess input parameters comes under "LOOP' and/or "LOOP & REDUCE".
for each value in your parameter field then it QMC will passes that parameter and runs the document and saves a document..and loops to the next one and saves it again...
But you can use this parameter to reduce as well..may be like using this in where clause in your script and/or using the same in your document name in QMC so that it will reduce and saves a single QVW for each parameter..and then loops.
I guess it depends on how you use it..
you can use this just to Pass a Parameter...
or Just looping and saving a single QVW per each parameter..
or Loop and reduce and then save..