Merge pull request rstudio-education#17 from psychometrician/patch-6

` to ++

Author: garrettgman

a1-starting.rmd

@@ -39,7 +39,7 @@ As a rule of thumb, 32-bit builds of R are faster than 64-bit builds, though not
 
 ## Using R
 
-R isn't a program that you can open and start using, like Microsoft Word or Internet Explorer. Instead, R is a computer language, like C, C`, or UNIX. You use R by writing commands in the R language and asking your computer to interpret them. In the old days, people ran R code in a UNIX terminal window—as if they were hackers in a movie from the 1980s. Now almost everyone uses R with an application called RStudio, and I recommend that you do, too.
+R isn't a program that you can open and start using, like Microsoft Word or Internet Explorer. Instead, R is a computer language, like C, C++, or UNIX. You use R by writing commands in the R language and asking your computer to interpret them. In the old days, people ran R code in a UNIX terminal window—as if they were hackers in a movie from the 1980s. Now almost everyone uses R with an application called RStudio, and I recommend that you do, too.
 
 ```{block2, type = "rmdtip"}
 **R and UNIX**