| NotYet {base} | R Documentation | 
In order to pinpoint missing functionality, the R core team uses these functions for missing R functions and not yet used arguments of existing R functions (which are typically there for compatibility purposes).
You are very welcome to contribute your code ...
.NotYetImplemented() .NotYetUsed(arg, error = TRUE)
arg | 
 an argument of a function that is not yet used.  | 
error | 
 a logical.  If   | 
the contrary, Deprecated and
Defunct for outdated code.
require(graphics) barplot(1:5, inside = TRUE) # 'inside' is not yet used