According to the spec:
"If the NoZoom flag is set, the annotation shall always maintain the same fixed size on the screen and shall be unaffected by the magnification level at which the page itself is displayed. Similarly, if the NoRotate flag is set, the annotation shall retain its original orientation on the screen when the page is rotated (by changing the Rotate entry in the page object; see 7.7.3, “Page Tree”)."
Poppler ignores both flags when rendering.
Decreasing importance now that at least we have a hack so that they are not bigger than should be.
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