code: def is_tashkeel(archar):
      """Checks for Arabic Tashkeel Marks:
  
      - FATHA, DAMMA, KASRA, SUKUN,
      - SHADDA,
      - FATHATAN, DAMMATAN, KASRATAN.
  
      @param archar: arabic unicode char
      @type archar: unicode
      @return:
      @rtype:Boolean
      """
      return archar in TASHKEEL
  
imports: import re
  from cltk.phonology.arb.utils.pyarabic import stack
label_desc: Use image node_id 5 for calling a global function with example usage: is_tashkeel(archar) and returns: unknown