Any question that totals to 100% gets a graphic representation in the form of a pie chart.
I tried to change the code to make it possible to choose a bar chart instead.
I did this because the pie chart is terrible to intepret when it depicts more than 3 variables. It sure looks nice, but it does not convey information in a nice manner: it flabbergasts.
(This link tells it much better than I ever could:http://www.perceptualedge.com/articles/08-21-07.pdf)

All possible transitions (of pages, of state) a survey can undergo by user interaction are:
- start
- resume a survey
- save the survey
- cancel and exit
- go prev
- go next
- end

The state of the art is a non-homogeneous implementation:
- Exit and clear = < a> tag with a fixed url carrying a crucial get parameter
- Load unfinished = < input> tag with type="submit" and crucial value "Load unfinished survey"
- Save = < input> tag with type="submit" and crucial value "saveall"
- < < prev = < input> tag with type="Submit" and crucial value "< < Prev"
- next>> = < input> tag with type="Submit" and crucial value "Next>>"
- start = < input> tag with type "Submit" and crucial value "movenext"
- end = < input> tag with type "submit". Value unknown at the time of writing this.

These should be harmonized: use the same tag and discriminate over one (single) parameter.

The 'exclude_all_others' attribute sould be available for any kind of Multiple
choice questions like:
P - Multiple Options with Comments
Q - Multiple short text
K - Multiple Numerical

and not just for:
?M - Multiple Options

It would be great if the 'other option' could be choosen as well to exclude all others.

Make the infos like browser agent, javascriptversion, OS and additonal infos available in the results.

Some workarounds are not working with different browsers. E.g. you wonder why a hidden question was filled out with a invalid value (solution, very old browser wasn't hiding the question). If you have the additional infos at hand you can quickly pinpoint what might be the cause of that answer pattern.

The variables could also be made accessible for conditions.
But to save them into the results would be already a big help to give feedback about problems and weighting them in terms of how often they would occur in the field.

The evaluated TOTAL assessment (sum) is nicely displayed at the end of the survey - which can only be seen by the user who filled the survey in.
However, this result is not stored at the answers database. After a lot of user filled the survey in, i would like to see the sums given for all of these users.
Now i have to export the answers and should repeat the assessment / summarize in Excel before i can see these TOTAL sums.