AxAcroPDF control, how to use .execCommand .messageHandler .postMessage ?

These tempting undocumented commands, how do they work ?

Any way I get send javascript commands through there ? Maybe get a JSObject ?

I'd like to be able to go to a bookmark, or even better search if a specific string exists in the document then show it highlighted to the user (or at least just go to the page where it is )

I also a full version of nuance powerpdf with my work computer however I can't find it's programming API documentation, if it even has one.

I want to make a excel sheet that does the aforementioned tasks but even though I can get adobe acrobat full, I can't get a license for every other PC (thousands of computers here) so my program would be doomed to not work for most users.

I also can't install any other software, but I could bundle files with my excel file so, there are any "portable" control for any other pdf reader that could do what I want, I would love to hear about it !

thanks !