## CodeRunner Documentation (V3.0.0)

### 10.2 HTML formatted columns

As a special case, a format of %h means that the test result field should be taken as ready-to-output HTML and should not be subject to further processing; this can be useful with custom-grader templates that generate HTML output, such as SVG graphics, and we have also used it in questions where the output from the student's program was HTML. A third use is with the diff filter, explained in the following section.

NOTE: %h format required PHP >= 5.4.0 and Libxml >= 2.7.8 in order to parse and clean the HTML output.