The construction greater-than ... assigns a range to a data attribute. The names of the keywords are summmed up in the table below.

Keywords Meaning
greater-than   < maxExclusive
lower-than  > minExclusive
greater-or-equal-to  maxInclusive
lower-or-equal-to  minInclusive
different-from  minExclusive & maxExclusive
equal-to  = .


Those examples show how to assign data attributes.

Every adult-person has-age greater-or-equal-to 18.