Closes the screens open, which happens
when plotting with `split.screen` is interrupted.
It often happens when there is a error while plotting.
When you try to plot
the next thing it gives an error.
Running this function will reset the plot screen.
It just does `close.screen(all.screens=TRUE)` but is faster to type.
Usage
csa(silent = FALSE)
Arguments
silent
Should the output of `close.screen` not be returned?
# NOT RUN {# Split screen into fourthssplit.screen(c(2,2))
hist(rnorm(100))
screen(2)
hist(runif(100))
# Use csa() to go back to normal plottingcsa()
hist(rexp(100))
# }