This template is equivalent to enclosing the text between two {{pipe}} templates (and a hair space   around the argument; a hair space being a 1.5 mu space, i.e. a 1/12 em space)

When {{math|{{pipe}}&#x200A;<!-- hair space -->''x''&#x200A;{{pipe}} < 7}}, the function is positive.

When | x | < 7, the function is positive.