Dimension unfolded Sheetmatal Part

Hi,
i have a pretty large unfolded Sheetmetal Dimension is prox. 2900 x 500.
Then i make additional Dimension (notched edges etc) in ModelSpace with annotativ Dimension Style, ok, as far as i can see.
But, when i switch to PaperSpace, the dimensions are very hard to read because there a so many of them on each edge.
Is there any idea how to make something like a SectionView for the unfolded Part.
Thanks
Peter

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