title: Which runtime is getting referenced
body: <p>I have installed R at following location <code>C:\E_Drive\ProgramFiles\R-3.4.3</code>, so I think R environment installed at <code>C:\E_Drive\ProgramFiles\R-3.4.3</code> will be used when I run the R console, right? Please correct me if I am wrong.</p>
  
  <p>Now, I install a package using the R console.</p>
  
  <p>Now, I download and install RStudio and from the R console of RStudio if I check whether that package is available or not then I see that it is available. I am wondering, how RStudio's R console reported that package is available, I didn't expect that since <code>C:\E_Drive\ProgramFiles\R-3.4.3</code> is not on my PATH and in no way is linked RStudio with <code>C:\E_Drive\ProgramFiles\R-3.4.3</code>, so I thought RStudio would be referring its own R environment.</p>
  
  <p>Can you please help me understand how my RStudio is referencing the <code>C:\E_Drive\ProgramFiles\R-3.4.3</code> R environment. </p>