docs: def check(somestr, check = STRING, interchange = ALL):
  	"""
  		Checks that some string, word or text are palindrome. Checking performs case-insensitive
  		
  		:param str somestr:
  		    It is some string that will be checked for palindrome
  		
  		:keyword int check:
  		    It is mode of checking. Follows modes are available:
  			
  		       - STRING - means that checking of string performs as string. See more at help(palindromus.checkstring)
  		       - WORD - means that checking of string performs as word. See more at help(palindromus.checkword)
  		       - MULTILINE - means that checking of string performs as multiline palindrome. See more at help(palindromus.checkmultiline)
  		       - TEXT - means that checking of string performs as text. See more at help(palindromus.checktext)
  			   - SUPER - means that checking of string performs as superpalindrome. See more at help(palindromus.checksuper)
  			
  		    The STRING-mode is default
  			
  		:keyword dict interchange:
  		    It is dictionary of interchangeable letters
  			
  		:except TypeError:
  		    If the checked string is not a string
  			
  		:except TypeError:
  		    If checking mode is not specified as integer
  			
  		:except ValueError:
  		    If value of checking mode is not valid.
  		    If value of checking mode in [STRING, WORD, MULTILINE, TEXT, SUPER] then it is valid
  			
  		:return bool:
  	"""
  	# check invalid data types
  	OnlyStringsCanBeChecked(somestr)
  	if not isinstance(check, int):
  		raise TypeError('keyword argument "check" must be an int')
  		
  	if check == STRING:
  		# check that string is palindrome
  		return checkstring(somestr, interchange = interchange)
  	elif check == WORD:
  		# check that word is palindrome
  		return checkword(somestr, interchange = interchange)
  	elif check == MULTILINE:
  		# check that text is multiline palindrome
  		return checkmultiline(somestr, interchange = interchange)
  	elif check == TEXT:
  		# check that text is palindrome
  		return checktext(somestr, interchange = interchange)
  	elif check == SUPER:
  		# check that text is super palindrome
  		return checksuper(somestr, interchange = interchange)
  	else:
  		# all other cases
  		raise ValueError('Unknown mode %i' % check)