RStudio console stuck - how to reset?

Using Version 0.98.11013. Say I'm testing the following code in my script: ``` for (num in 1:5) { # Print numbers from 1 to the loop variable print(1:num) } ``` As I step over each line (using CTRL+R), I get the following output in the Console: ``` > for (num in 1:5) + { + # Print numbers from 1 to the loop variable + print(1:num) + } [1] 1 [1] 1 2 [1] 1 2 3 [1] 1 2 3 4 [1] 1 2 3 4 5 > ``` Now, say I've made an error in my code and forgotten the closing brace `}`: ``` for (num in 1:5) { # Print numbers from 1 to the loop variable print(1:num) randomArray <- c(1:10) # ...and the next line of the R script ``` Now the Console shows a `+` symbol for every line because it is looking for a closing brace. Someone new to R or RStudio may not be aware of this. Nothing I do gets output working again except closing and re-opening RStudio. Is there a way to force the RStudio Console (or is it the R interpreter?) to "reset"?