Configuration

• Invisible functions return values which can be assigned, but do not print when they are not assigned.

example:

invisible(.libPaths())

Function

• cat

cat("nico","gerard","\n",sep=" ")

• sprintf

cat(sprintf("Current working dir: %s\n", wd))

• print

print("nico")

• message

message(sprintf("Current working dir: %s\n", wd))