I see that too, also with the C Library Reference.
BTW on further investigation I've noted one serious shortcoming to generating PDFs this way: NewView (or probably more accurately Sibyl) rasterizes all the text to bitmaps when generating the Postscript, which means (a) the output files are huge, (b) the text looks kind of ugly, and (c) searching for text is impossible.
One alternative is to use IBM View (ibmview.exe on eCS) to print... this avoids the above problem, but is only capable of printing the text in monospaced font (specifically Courier).
In both cases, support for bookmarks/PDF table of contents is unavailable.