Horizontal line in ALV for spool request?

Hi,

I was creating a layout for a request spool with alv grid using fm 'REUSE_ALV_GRID_DISPLAY'.

The output is like that, just added an empty row every time the MATNR changes as separator from each other.

Now, instead of this empty row, it is possible to add horizontal line as separator in this kind of grid layout?

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