Can you answer this technical question(Details inside..)?

Yes. It’s been years, but in a past job I had to write into PDFs programmatically. At it’s core, a PDF is a page description typed out in plain text.

To give you an idea of the mechanics, here are the methods available in PHP: PHP PDF Functions

UPDATE: I see you specified “navigate” and the PHP functions above are for creating PDFs.

I know it’s possible, I do not know offhand how to do it.

I found this Parameters for Opening PDF Files (it’s a PDF!).

Pertinent items:
1)
nameddest=destination
Specifies a named destination in the PDF document

2)
viewrect=left,top,wd,ht
Sets the view rectangle using float or integer values in a
coordinate system where 0,0 represents the top left corner of the
visible page, regardless of document rotation.

3)
view=Fit
view=FitH
view=FitH,top
view=FitV
view=FitV,left
view=FitB
view=FitBH
view=FitBH,top
view=FitBV
view=FitBV,left
Set the view of the displayed page, using the keyword values
defined in the PDF language specification. For more information,
see the PDF Reference.
Scroll values left and top are floats or integers in a coordinate
system where 0,0 represents the top left corner of the visible
page, regardless of document rotation.
Use the page command before this command.
Note: This parameter is not supported on the command line.

^^ Thanks a lot..I will try it..)