diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -10,10 +10,14 @@
 
 ## 0.3.0.0 -- 2021-08-31
 
-* Third version. Added the possibility to specify dividing using negative second 
+* Third version. Added the possibility to specify dividing using negative second
 part that is counting from the end of the word in the opposite direction.
 
 ## 0.4.0.0 -- 2021-09-03
 
 * Fourth version. Added a new function readFileIfAny that catches all IOException's so that returns empty String.
 Some documentation improvements.
+
+## 0.5.0.0 -- 2021-09-04
+
+* Fifth version. Added new functions that can be used in the phonetic languages approach.
diff --git a/Interpreter/StringConversion.hs b/Interpreter/StringConversion.hs
--- a/Interpreter/StringConversion.hs
+++ b/Interpreter/StringConversion.hs
@@ -14,7 +14,7 @@
 
 import Text.Read (readMaybe)
 import Data.Maybe (fromJust,fromMaybe)
-import Data.Char (isDigit)
+import Data.Char (isDigit,isAlpha)
 import Data.List (sort,nub,(\\))
 import Data.Monoid (mappend)
 import Control.Exception
@@ -59,3 +59,25 @@
 some 'IOException' thrown or an empty file then returns just "". Raises an exception for the binary file. -}
 readFileIfAny :: FilePath -> IO String
 readFileIfAny file = catch (readFile file) (\(e :: IOException) -> return "")
+
+-------------------------------------------------------------
+
+{-| If 'True' then it might be the one word in the phonetic languages approach. If 'False', it is usually not.
+-}
+mightBePLWord :: String -> Bool
+mightBePLWord xs
+ | null (dropWhile (not . isAlpha) us) = not (null ts)
+ | otherwise = False
+     where (ts,us) = span isAlpha xs
+{-# INLINE mightBePLWord #-}
+
+argsConvertTextual :: String -> [String] -> [String]
+argsConvertTextual ts tss
+ | any (== ts) tss = tss
+ | otherwise = tss `mappend` [ts]
+{-# INLINE argsConvertTextual #-}
+
+fullArgsConvertTextual :: String -> String -> [String] -> [String]
+fullArgsConvertTextual textProcessment0 lineA args =
+  argsConvertTextual textProcessment0 (takeWhile (not . mightBePLWord) args `mappend` words lineA)
+{-# INLINE fullArgsConvertTextual #-}
diff --git a/string-interpreter.cabal b/string-interpreter.cabal
--- a/string-interpreter.cabal
+++ b/string-interpreter.cabal
@@ -2,9 +2,9 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                string-interpreter
-version:             0.4.0.0
-synopsis:            Is used in the recursive mode for phonetic languages approach.
-description:         A library that has commonly used function for the phonetic-languages implementations.
+version:             0.5.0.0
+synopsis:            Is used in the phonetic languages approach (e. g. in the recursive mode).
+description:         A library that has commonly used functions for the phonetic-languages implementations that deals with String data.
 homepage:            https://hackage.haskell.org/package/string-interpreter
 license:             MIT
 license-file:        LICENSE