Is there any way to create column groups, or nested column headings, in an oj-table? Similar to the "Ultimate tensile strength" group on this CodePen example:
https://codepen.io/chriscoyier/pen/AlxGt
The Cookbook has a Nested Header Data Source (Advanced) page that shows an example of doing something somewhat similar to this, but with the oj-data-grid component. It requires creating an entirely custom Data Source class just do it, which is way more overhead than we really need for our requirements.
FYI, I am in JET 4.0 currently.