code: def p_incbin(p):
      
      try:
          fname = zxbpp.search_filename(p[2], p.lineno(2), local_first=True)
          if not fname:
              p[0] = None
              return
          with api.utils.open_file(fname, 'rb') as f:
              filecontent = f.read()
      except IOError:
          error(p.lineno(2), "cannot read file '%s'" % p[2])
          p[0] = None
          return
  
      p[0] = Asm(p.lineno(1), 'DEFB', filecontent)
docs: asm : INCBIN STRING