The default unit used for specifying wanted values, for QSMax and QSMin. taken from SI units to provide standard references converted at time of display to cater for users' unit preferences.

• QID

We clearly need a standard unit vocabulary, particularly for dimensions with different units in different countries or cultures. There may also be ranges of non-physical dimensions, in which case we would need a link to a place where the units are defined.

• on the HTML site