Writes a header surrounded by a frame.
The output is indented according to *enter()/*exit()
calls.
# S3 method for Verbose
header(this, ..., char="-", padding=0, prefix=paste(char, paste(rep(" ",
max(padding, 1)), collapse = ""), sep = ""), level=this$defaultLevel)The title.
The character string to make up the frame.
The number of rows and character to pad the title above, below, and to the left.
The prefix of all padded lines and the title line.
A numeric value to be compared to the threshold.
Returns nothing.
For more information see Verbose.