On Tue, 1 Mar 2016, Summers, Peter wrote:
 At least on my Windows 7 desktop, the documentation gets removed by 
 the uninstaller automatically. I can also confirm the behavior of 
 the new link (Gretl guide opens, but not to the indicated chapter). 
Thanks for testing, Peter.
My understanding is that Acrobat Reader should honor something like
AcroRd32.exe /A "nameddest=chap:dpanel" gretl-guide.pdf
But at present when opening a PDF file on Windows we use the 
ShellExecute API (Windows gets to decide how to open the file), and 
I'm pretty sure the syntax above will not work with other PDF viewers. 
Maybe we can try to detect if AcroRd32 is the default PDF viewer and 
if so, call it specifically with a suitable option.
Allin