| 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 TRUE, an error is signalled; if
FALSE; only a warning is given. | 
the contrary, Deprecated and
Defunct for outdated code.
require(graphics)
require(stats)
plot.mlm         # to see how the "NotYetImplemented"
                 # reference is made automagically
try(plot.mlm())
barplot(1:5, inside = TRUE) # 'inside' is not yet used