Oh, well of course. Anytime you click on a link to a .pdf file it's going to open the file if you have required default reader installed.

If you have adobe set as default program for file type .pdf, which it should be set as default, and you click on a .pdf link, it should open the document only, but will not save it to your local machine. With the document opened, I believe you would have to press the Floppy Icon, or File > Save > SaveAs to actually save. And if you have the option "ask for save location", you will be prompted for location to save. If that option not selected, it will download to what ever location you have specified as the default save location. But you probably already know this.

Oh, well of course. Anytime you click on a link to a file it's going to open the file if you have required default reader installed.

If you have adobe set as default program for file type .pdf, which it should be set as default, and you click on a .pdf link, it should open the document only, but will not save it to your local machine. With the document opened, I believe you would have to press the Floppy Icon, or File > Save > SaveAs to actually save. And if you have the option "ask for save location", you will be prompted for location to save. If that option not selected, it will download to what ever location you have specified as the default save location. But you probably already know this.