[TYPO3] wrap a COA using 'optionSplit'?

[Tapio Markula]

Peter Klein wrote:
> Hi Kasper. OptionSplit only works in HMENU objects

Well, Peter, you gave then once incorrect hint to use option split for
headers (stdheader).

I should do it other way by counting, which is the first header
in certain column.

cObj:parentRecordNumber has some method to count but I don't
know a way to utilize the information.

>, or using the "split" property.

how?