More meaningful head(df) output.
The behaviour is similar to print(head(x, n)). The difference is, that if
the number of rows in a data.frame/matrix or the number of elements in a list
or vector is larger than n, additional information is printed about
the total number of rows or elements respectively.
printHead(x, n = 6L)
x | 
 [  | 
n | 
 [  | 
Nothing.
Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.