ruler.Verbose: Writes a ruler
Description
  Writes a ruler.
Usage
"ruler"(this, char="-", toColumn=this$rightMargin, length=toColumn - this$indentPos, level=this$defaultLevel, ...)
Arguments
toColumn
The column number where the ruler should finish.
length
The length of the ruler.
level
A numeric value to be compared to the threshold. See Also
  For more information see Verbose.