Visvanath Ratnaweera

> No error messages with debugging on.

Did you look at the server logs?

Why not the prescribed way as documented in Language_settings#Display_language_menu?

Dominique, sorry to disappoint you, I can't think of a case where the grading needs to be non-linear. May be Nguyen does.

Now looking back at the Mars & Co. set of questions, I see that they don't even have to be MTF. It could be a multi-choice MC or even a single-choice Q. For example:

Which one (are) correct?
a) The statement is correct. The explanation is factually correct and is also the correct explanation.

b) The statement is correct. The explanation is factually correct but is not the explanation.

c) The statement is correct. The explanation is factually wrong and doesn't support the statement.

Not that I make this kind of questions. This discussion on "related T/F" brought me memories from my Grade 10 school leaving exam. Apparently this style has died some time in the many, many decades since then.

This discussion might contain some hints: Draw/Producing Histogram or Bar Chart With Moodle.

Dominique, is there a "cheat sheet" on the Formulas question type?