;+
; NAME:
;    strend
; PURPOSE: (one line)
;    Return the last n characters in a string
; DESCRIPTION:
;
; CATEGORY:
;    Utility
; CALLING SEQUENCE:
;    str2 = strend(str, n)
; INPUTS:
;   str - the input string
;   n - number of characters to return
;
; OUTPUTS:
;    str2 - last n characters of str, or str if strlen(str) >= n
;
; MODIFICATION HISTORY:
;  2007 11 14 Leslie Young SwRI
;-
function strend, str, n

    len = strlen(str)
    if len le n then return, str

    return, strmid(str, len-n, len)

end