[R] how to wrap a long line in R scripts?

[Tutu2008]

The guide of R Code style recommends to write script with a maximal
length of 80 characters?

how to break a line longer than 80 characters like
filename_name <- ("/blaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/"/
blaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/data.csv")

I did not find any answer while googling.


Thank you!