This is a question for the techies:
In my structured EDD, I have created hazard statements according to the ANSI Z535.6 standard, using a table format - with the table heading showing the hazard category (notice, caution, warning, danger) and the rows showing the individual messages. In the individual messages I have an icon to the left and the message text next to it. Visually, it is better to separate the two cells with a thin line. But in the header there is no icon to the left and I would like to remove the thin line. Yes, I am a perfectionist, I know 
Here is what it looks like now:
As far as I can tell, there is no way to tell Frame to suppress the column separator line in the heading without also removing it in the body rows. And if I do remove the line, there is still a thin white line visible, as the heading cells are filled with an image covering its entire area (but that image does not cross over the invisible line, at least not in the PDF). Another option would be to use straddle on the heading cells, but I need to be able to do everything from the structured EDD and paragraph plus table formats. Is there a way to do this ?
Thanks in advance
Jang