f(a = "                                    a",
  b = "                                    b",
  c = "                                    c",
  d = "                                    d") 

f(a = c("abcdef", "abcdef", "abcdef", "abcdef", "abcdef", "abcdef", "abcdef",
  "abcdef", "abcdef", "abcdef")) 


  \method{mean}{reallyratherquitelongclassname}(reallyreatherquitelongargument = "reallyratherquitelongvalue_____________________") 

long_replacement_fun(x, a = "aaaaaaaaaaaaaaaa", b = "aaaaaaaaaaaaaaaa",
  c = "aaaaaaaaaaaaaaaa") <- value 

f(xxxxxxxxxxxxxxxxxx1, xxxxxxxxxxxxxxxxxx2, xxxxxxxxxxxxxxxxxx3, x = "\\"'",
  xxxxxxxxxxxxxxxxxx4, xxxxxxxxxxxxxxxxxx5, xxxxxxxxxxxxxxxxxx6,
  xxxxxxxxxxxxxxxxxx7) 

