Feature request: Button and key shortcut for opening compiled PDF output



In my daily workflow, I often compile PDF files from RMarkdown files, which are opened automatically upon successful compilation.
Depending on the size of the document, this can also take a while.
Especially the compilation of larger bookdown projects can take roughly have a minute (which is absolutely fine given the complexity of the process).

After looking whether the changes yielded the desired results, I usually close the file and continue writing or coding.

Now it often happens to me, that I would like to open again the generated PDF file, because I forgot some detail of it and until now, the only way to do this is to press Ctrl + o in order to choose the compiled output file for opening.

Wouldn't it be nice to further accelerate this workflow by adding a keystroke or a button, which directly opens the last compiled output file?

I could imagine something like AUCTeX and many other programs, where one has a keystroke for compiling the output document and one for opening it.