diff --git a/src/fenrir-package/commands/commands/bookmark_1.py b/src/fenrir-package/commands/commands/bookmark_1.py
index 0ecd7285..af89911d 100644
--- a/src/fenrir-package/commands/commands/bookmark_1.py
+++ b/src/fenrir-package/commands/commands/bookmark_1.py
@@ -39,7 +39,7 @@ class command():
         else:
             x, y, marked = \
               line_utils.getCurrentLine(startMark['x'], startMark['y'], self.env['screenData']['newContentText'])
-        if marked.strip(" \t\n") == '':
+        if marked.isspace():
             self.env['runtime']['outputManager'].presentText("blank", soundIcon='EmptyLine', interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(marked, interrupt=True)
diff --git a/src/fenrir-package/commands/commands/bookmark_10.py b/src/fenrir-package/commands/commands/bookmark_10.py
index 78458d15..9df8c53a 100644
--- a/src/fenrir-package/commands/commands/bookmark_10.py
+++ b/src/fenrir-package/commands/commands/bookmark_10.py
@@ -39,7 +39,7 @@ class command():
         else:
             x, y, marked = \
               line_utils.getCurrentLine(startMark['x'], startMark['y'], self.env['screenData']['newContentText'])
-        if marked.strip(" \t\n") == '':
+        if marked.isspace():
             self.env['runtime']['outputManager'].presentText("blank", soundIcon='EmptyLine', interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(marked, interrupt=True)
diff --git a/src/fenrir-package/commands/commands/bookmark_2.py b/src/fenrir-package/commands/commands/bookmark_2.py
index c104fbab..13bf67cd 100644
--- a/src/fenrir-package/commands/commands/bookmark_2.py
+++ b/src/fenrir-package/commands/commands/bookmark_2.py
@@ -39,7 +39,7 @@ class command():
         else:
             x, y, marked = \
               line_utils.getCurrentLine(startMark['x'], startMark['y'], self.env['screenData']['newContentText'])
-        if marked.strip(" \t\n") == '':
+        if marked.isspace():
             self.env['runtime']['outputManager'].presentText("blank", soundIcon='EmptyLine', interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(marked, interrupt=True)
diff --git a/src/fenrir-package/commands/commands/bookmark_3.py b/src/fenrir-package/commands/commands/bookmark_3.py
index 8ac7d219..72a9e69f 100644
--- a/src/fenrir-package/commands/commands/bookmark_3.py
+++ b/src/fenrir-package/commands/commands/bookmark_3.py
@@ -39,7 +39,7 @@ class command():
         else:
             x, y, marked = \
               line_utils.getCurrentLine(startMark['x'], startMark['y'], self.env['screenData']['newContentText'])
-        if marked.strip(" \t\n") == '':
+        if marked.isspace():
             self.env['runtime']['outputManager'].presentText("blank", soundIcon='EmptyLine', interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(marked, interrupt=True)
diff --git a/src/fenrir-package/commands/commands/bookmark_4.py b/src/fenrir-package/commands/commands/bookmark_4.py
index 632078a1..dd7c79e9 100644
--- a/src/fenrir-package/commands/commands/bookmark_4.py
+++ b/src/fenrir-package/commands/commands/bookmark_4.py
@@ -39,7 +39,7 @@ class command():
         else:
             x, y, marked = \
               line_utils.getCurrentLine(startMark['x'], startMark['y'], self.env['screenData']['newContentText'])
-        if marked.strip(" \t\n") == '':
+        if marked.isspace():
             self.env['runtime']['outputManager'].presentText("blank", soundIcon='EmptyLine', interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(marked, interrupt=True)
diff --git a/src/fenrir-package/commands/commands/bookmark_5.py b/src/fenrir-package/commands/commands/bookmark_5.py
index a6f0dbb4..7fb1a8b4 100644
--- a/src/fenrir-package/commands/commands/bookmark_5.py
+++ b/src/fenrir-package/commands/commands/bookmark_5.py
@@ -39,7 +39,7 @@ class command():
         else:
             x, y, marked = \
               line_utils.getCurrentLine(startMark['x'], startMark['y'], self.env['screenData']['newContentText'])
-        if marked.strip(" \t\n") == '':
+        if marked.isspace():
             self.env['runtime']['outputManager'].presentText("blank", soundIcon='EmptyLine', interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(marked, interrupt=True)
diff --git a/src/fenrir-package/commands/commands/bookmark_6.py b/src/fenrir-package/commands/commands/bookmark_6.py
index b3af4f1d..2faa84be 100644
--- a/src/fenrir-package/commands/commands/bookmark_6.py
+++ b/src/fenrir-package/commands/commands/bookmark_6.py
@@ -39,7 +39,7 @@ class command():
         else:
             x, y, marked = \
               line_utils.getCurrentLine(startMark['x'], startMark['y'], self.env['screenData']['newContentText'])
-        if marked.strip(" \t\n") == '':
+        if marked.isspace():
             self.env['runtime']['outputManager'].presentText("blank", soundIcon='EmptyLine', interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(marked, interrupt=True)
diff --git a/src/fenrir-package/commands/commands/bookmark_7.py b/src/fenrir-package/commands/commands/bookmark_7.py
index ead50f79..cb7880ff 100644
--- a/src/fenrir-package/commands/commands/bookmark_7.py
+++ b/src/fenrir-package/commands/commands/bookmark_7.py
@@ -39,7 +39,7 @@ class command():
         else:
             x, y, marked = \
               line_utils.getCurrentLine(startMark['x'], startMark['y'], self.env['screenData']['newContentText'])
-        if marked.strip(" \t\n") == '':
+        if marked.isspace():
             self.env['runtime']['outputManager'].presentText("blank", soundIcon='EmptyLine', interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(marked, interrupt=True)
diff --git a/src/fenrir-package/commands/commands/bookmark_8.py b/src/fenrir-package/commands/commands/bookmark_8.py
index 0e3546d1..1439dea6 100644
--- a/src/fenrir-package/commands/commands/bookmark_8.py
+++ b/src/fenrir-package/commands/commands/bookmark_8.py
@@ -39,7 +39,7 @@ class command():
         else:
             x, y, marked = \
               line_utils.getCurrentLine(startMark['x'], startMark['y'], self.env['screenData']['newContentText'])
-        if marked.strip(" \t\n") == '':
+        if marked.isspace():
             self.env['runtime']['outputManager'].presentText("blank", soundIcon='EmptyLine', interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(marked, interrupt=True)
diff --git a/src/fenrir-package/commands/commands/bookmark_9.py b/src/fenrir-package/commands/commands/bookmark_9.py
index 41f70c84..a494a7a4 100644
--- a/src/fenrir-package/commands/commands/bookmark_9.py
+++ b/src/fenrir-package/commands/commands/bookmark_9.py
@@ -39,7 +39,7 @@ class command():
         else:
             x, y, marked = \
               line_utils.getCurrentLine(startMark['x'], startMark['y'], self.env['screenData']['newContentText'])
-        if marked.strip(" \t\n") == '':
+        if marked.isspace():
             self.env['runtime']['outputManager'].presentText("blank", soundIcon='EmptyLine', interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(marked, interrupt=True)
diff --git a/src/fenrir-package/commands/commands/copy_marked_to_clipboard.py b/src/fenrir-package/commands/commands/copy_marked_to_clipboard.py
index edafe95c..730082fc 100644
--- a/src/fenrir-package/commands/commands/copy_marked_to_clipboard.py
+++ b/src/fenrir-package/commands/commands/copy_marked_to_clipboard.py
@@ -34,7 +34,7 @@ class command():
         self.env['commandBuffer']['Marks']['1'] = None
         self.env['commandBuffer']['Marks']['2'] = None
         
-        if marked.strip(" \t\n") == '':
+        if marked.isspace():
             self.env['runtime']['outputManager'].presentText("blank", soundIcon='EmptyLine', interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(marked, interrupt=True)
diff --git a/src/fenrir-package/commands/commands/curr_char_phonetic.py b/src/fenrir-package/commands/commands/curr_char_phonetic.py
index eccb321d..8408b41e 100644
--- a/src/fenrir-package/commands/commands/curr_char_phonetic.py
+++ b/src/fenrir-package/commands/commands/curr_char_phonetic.py
@@ -23,7 +23,7 @@ class command():
         x, y, currChar = \
           char_utils.getCurrentChar(cursorPos['x'], cursorPos['y'], self.env['screenData']['newContentText'])
         
-        if currChar.strip(" \t\n") == '':
+        if currChar.isspace():
             self.env['runtime']['outputManager'].presentText("blank" ,interrupt=True)
         else:
             currChar = char_utils.getPhonetic(currChar)
diff --git a/src/fenrir-package/commands/commands/curr_screen.py b/src/fenrir-package/commands/commands/curr_screen.py
index 48e24231..8a1d42b0 100644
--- a/src/fenrir-package/commands/commands/curr_screen.py
+++ b/src/fenrir-package/commands/commands/curr_screen.py
@@ -17,7 +17,7 @@ class command():
         return 'reads the contents of the current screen'        
 
     def run(self):
-        if self.env['screenData']['newContentText'].strip(" \t\n") == '':
+        if self.env['screenData']['newContentText'].isspace():
             self.env['runtime']['outputManager'].presentText("screen is empty", soundIcon='EmptyLine', interrupt=True)
         else:    
            self.env['runtime']['outputManager'].presentText(self.env['screenData']['newContentText'],interrupt=True)
diff --git a/src/fenrir-package/commands/commands/curr_screen_after_cursor.py b/src/fenrir-package/commands/commands/curr_screen_after_cursor.py
index d78110fa..7b33dff7 100644
--- a/src/fenrir-package/commands/commands/curr_screen_after_cursor.py
+++ b/src/fenrir-package/commands/commands/curr_screen_after_cursor.py
@@ -23,7 +23,7 @@ class command():
 
         textAfterCursor = mark_utils.getTextAfterMark(cursorPos, self.env['screenData']['newContentText'])
 
-        if textAfterCursor.strip(" \t\n") == '':
+        if textAfterCursor.isspace():
             self.env['runtime']['outputManager'].presentText("blank", soundIcon='EmptyLine', interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(textAfterCursor, interrupt=True)
diff --git a/src/fenrir-package/commands/commands/curr_screen_before_cursor.py b/src/fenrir-package/commands/commands/curr_screen_before_cursor.py
index 34a0a3fc..e9367411 100644
--- a/src/fenrir-package/commands/commands/curr_screen_before_cursor.py
+++ b/src/fenrir-package/commands/commands/curr_screen_before_cursor.py
@@ -26,7 +26,7 @@ class command():
 
         textBeforeCursor = mark_utils.getTextBeforeMark(cursorPos, self.env['screenData']['newContentText'])
 
-        if textBeforeCursor.strip(" \t\n") == '':
+        if textBeforeCursor.isspace():
             self.env['runtime']['outputManager'].presentText("blank", soundIcon='EmptyLine', interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(textBeforeCursor, interrupt=True)
diff --git a/src/fenrir-package/commands/commands/curr_word_phonetic.py b/src/fenrir-package/commands/commands/curr_word_phonetic.py
index 24d5c4b8..737e70c5 100644
--- a/src/fenrir-package/commands/commands/curr_word_phonetic.py
+++ b/src/fenrir-package/commands/commands/curr_word_phonetic.py
@@ -23,7 +23,7 @@ class command():
         x, y, currWord = \
           word_utils.getCurrentWord(cursorPos['x'], cursorPos['y'], self.env['screenData']['newContentText'])
         
-        if currWord.strip(" \t\n") == '':
+        if currWord.isspace():
             self.env['runtime']['outputManager'].presentText("blank", interrupt=True)
         else:
             firstSequence = True
diff --git a/src/fenrir-package/commands/commands/indent_curr_line.py b/src/fenrir-package/commands/commands/indent_curr_line.py
index a06d34ff..4cfe3bdf 100644
--- a/src/fenrir-package/commands/commands/indent_curr_line.py
+++ b/src/fenrir-package/commands/commands/indent_curr_line.py
@@ -27,7 +27,7 @@ class command():
         x, y, currLine = \
           line_utils.getCurrentLine(cursorPos['x'], cursorPos['y'], self.env['screenData']['newContentText'])
         
-        if currLine.strip(" \t\n") == '':
+        if currLine.isspace():
             self.env['runtime']['outputManager'].presentText("blank", soundIcon='EmptyLine', interrupt=True)
         else:        
             self.env['runtime']['outputManager'].presentText("indent "+  str(len(currLine) - len(currLine.lstrip())), interrupt=True)
diff --git a/src/fenrir-package/commands/commands/marked_text.py b/src/fenrir-package/commands/commands/marked_text.py
index 1125653a..7e7bc323 100644
--- a/src/fenrir-package/commands/commands/marked_text.py
+++ b/src/fenrir-package/commands/commands/marked_text.py
@@ -29,7 +29,7 @@ class command():
 
         marked = mark_utils.getTextBetweenMarks(startMark, endMark, self.env['screenData']['newContentText'])
 
-        if marked.strip(" \t\n") == '':
+        if marked.isspace():
             self.env['runtime']['outputManager'].presentText("blank", soundIcon='EmptyLine', interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(marked, interrupt=True)
diff --git a/src/fenrir-package/commands/commands/present_first_line.py b/src/fenrir-package/commands/commands/present_first_line.py
index efa4b620..40954173 100644
--- a/src/fenrir-package/commands/commands/present_first_line.py
+++ b/src/fenrir-package/commands/commands/present_first_line.py
@@ -21,7 +21,7 @@ class command():
         x, y, firstLine = \
           line_utils.getCurrentLine(0, 0, self.env['screenData']['newContentText'])
         
-        if firstLine.strip(" \t\n") == '':
+        if firstLine.isspace():
             self.env['runtime']['outputManager'].presentText("blank", soundIcon='EmptyLine', interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(firstLine, interrupt=True) 
diff --git a/src/fenrir-package/commands/commands/present_last_line.py b/src/fenrir-package/commands/commands/present_last_line.py
index 65af8220..f53af172 100644
--- a/src/fenrir-package/commands/commands/present_last_line.py
+++ b/src/fenrir-package/commands/commands/present_last_line.py
@@ -21,7 +21,7 @@ class command():
         x, y, lastLine = \
           line_utils.getCurrentLine(0, self.env['screenData']['lines'] -1, self.env['screenData']['newContentText'])
 
-        if lastLine.strip(" \t\n") == '':
+        if lastLine.isspace():
             self.env['runtime']['outputManager'].presentText("blank", soundIcon='EmptyLine', interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(lastLine, interrupt=True) 
diff --git a/src/fenrir-package/commands/commands/remove_word_from_spell_check.py b/src/fenrir-package/commands/commands/remove_word_from_spell_check.py
index 45507d26..6758ef26 100644
--- a/src/fenrir-package/commands/commands/remove_word_from_spell_check.py
+++ b/src/fenrir-package/commands/commands/remove_word_from_spell_check.py
@@ -44,7 +44,7 @@ class command():
         newContent = self.env['screenData']['newContentText'].split('\n')[cursorPos['y']]
         x, y, currWord =  word_utils.getCurrentWord(cursorPos['x'], 0, newContent)                  
 
-        if currWord != '':
+        if not currWord.isspace():
             if self.spellChecker.is_removed(currWord):
                 self.env['runtime']['outputManager'].presentText(currWord + ' is already removed from dict',soundIcon='Cancel', interrupt=True)                
             else:
diff --git a/src/fenrir-package/commands/commands/review_curr_char.py b/src/fenrir-package/commands/commands/review_curr_char.py
index d89622f8..993f5929 100644
--- a/src/fenrir-package/commands/commands/review_curr_char.py
+++ b/src/fenrir-package/commands/commands/review_curr_char.py
@@ -23,7 +23,7 @@ class command():
         self.env['screenData']['newCursorReview']['x'], self.env['screenData']['newCursorReview']['y'], currChar = \
           char_utils.getCurrentChar(self.env['screenData']['newCursorReview']['x'], self.env['screenData']['newCursorReview']['y'], self.env['screenData']['newContentText'])
         
-        if currChar.strip(" \t\n") == '':
+        if currChar.isspace():
             self.env['runtime']['outputManager'].presentText("blank" ,interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(currChar ,interrupt=True, ignorePunctuation=True, announceCapital=True)
diff --git a/src/fenrir-package/commands/commands/review_curr_line.py b/src/fenrir-package/commands/commands/review_curr_line.py
index 21dc9d28..6d8c9c19 100644
--- a/src/fenrir-package/commands/commands/review_curr_line.py
+++ b/src/fenrir-package/commands/commands/review_curr_line.py
@@ -23,7 +23,7 @@ class command():
         self.env['screenData']['newCursorReview']['x'], self.env['screenData']['newCursorReview']['y'], currLine = \
           line_utils.getCurrentLine(self.env['screenData']['newCursorReview']['x'], self.env['screenData']['newCursorReview']['y'], self.env['screenData']['newContentText'])
         
-        if currLine.strip(" \t\n") == '':
+        if currLine.isspace():
             self.env['runtime']['outputManager'].presentText("blank", soundIcon='EmptyLine', interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(currLine, interrupt=True) 
diff --git a/src/fenrir-package/commands/commands/review_curr_word.py b/src/fenrir-package/commands/commands/review_curr_word.py
index a39e097d..0d657a6b 100644
--- a/src/fenrir-package/commands/commands/review_curr_word.py
+++ b/src/fenrir-package/commands/commands/review_curr_word.py
@@ -23,7 +23,7 @@ class command():
         self.env['screenData']['newCursorReview']['x'], self.env['screenData']['newCursorReview']['y'], currWord = \
           word_utils.getCurrentWord(self.env['screenData']['newCursorReview']['x'], self.env['screenData']['newCursorReview']['y'], self.env['screenData']['newContentText'])
         
-        if currWord.strip(" \t\n") == '':
+        if currWord.isspace():
             self.env['runtime']['outputManager'].presentText("blank", interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(currWord, interrupt=True)
diff --git a/src/fenrir-package/commands/commands/review_down.py b/src/fenrir-package/commands/commands/review_down.py
index 25843872..bea47c06 100644
--- a/src/fenrir-package/commands/commands/review_down.py
+++ b/src/fenrir-package/commands/commands/review_down.py
@@ -21,7 +21,7 @@ class command():
         cursorPos = self.env['runtime']['cursorManager'].getReviewOrTextCursor()
         self.env['screenData']['newCursorReview']['x'], self.env['screenData']['newCursorReview']['y'], downChar = \
           char_utils.getDownChar(self.env['screenData']['newCursorReview']['x'],self.env['screenData']['newCursorReview']['y'], self.env['screenData']['newContentText'])
-        if downChar.strip(" \t\n") == '':
+        if downChar.isspace():
             self.env['runtime']['outputManager'].presentText("line is empty" ,interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(downChar ,interrupt=True, ignorePunctuation=True, announceCapital=True)        
diff --git a/src/fenrir-package/commands/commands/review_line_begin.py b/src/fenrir-package/commands/commands/review_line_begin.py
index 61e17e46..e69c0a37 100644
--- a/src/fenrir-package/commands/commands/review_line_begin.py
+++ b/src/fenrir-package/commands/commands/review_line_begin.py
@@ -23,7 +23,7 @@ class command():
         self.env['screenData']['newCursorReview']['x'], self.env['screenData']['newCursorReview']['y'], currChar = \
           char_utils.getCurrentChar(self.env['screenData']['newCursorReview']['x'], self.env['screenData']['newCursorReview']['y'], self.env['screenData']['newContentText'])
         
-        if currChar.strip(" \t\n") == '':
+        if currChar.isspace():
             self.env['runtime']['outputManager'].presentText("blank" ,interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(currChar ,interrupt=True, ignorePunctuation=True, announceCapital=True)        
diff --git a/src/fenrir-package/commands/commands/review_line_end.py b/src/fenrir-package/commands/commands/review_line_end.py
index ad7cb18f..9bb30561 100644
--- a/src/fenrir-package/commands/commands/review_line_end.py
+++ b/src/fenrir-package/commands/commands/review_line_end.py
@@ -23,8 +23,8 @@ class command():
         self.env['screenData']['newCursorReview']['x'], self.env['screenData']['newCursorReview']['y'], currChar = \
           char_utils.getCurrentChar(self.env['screenData']['newCursorReview']['x'], self.env['screenData']['newCursorReview']['y'], self.env['screenData']['newContentText'])
         
-        if currChar.strip(" \t\n") == '':
-            self.env['runtime']['outputManager'].presentText("blank" ,interrupt=True)
+        if currChar.isspace():
+            self.env['runtime']['outputManager'].presentText("space" ,interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(currChar ,interrupt=True, ignorePunctuation=True, announceCapital=True)        
         self.env['runtime']['outputManager'].presentText("end of line", interrupt=False)
diff --git a/src/fenrir-package/commands/commands/review_line_last_char.py b/src/fenrir-package/commands/commands/review_line_last_char.py
index 6a494543..bb405abd 100644
--- a/src/fenrir-package/commands/commands/review_line_last_char.py
+++ b/src/fenrir-package/commands/commands/review_line_last_char.py
@@ -23,7 +23,7 @@ class command():
         self.env['screenData']['newCursorReview']['x'], self.env['screenData']['newCursorReview']['y'], lastChar = \
           char_utils.getLastCharInLine(self.env['screenData']['newCursorReview']['y'], self.env['screenData']['newContentText'])
         
-        if lastChar.strip(" \t\n") == '':
+        if lastChar.isspace():
             self.env['runtime']['outputManager'].presentText("line is empty" ,interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(lastChar ,interrupt=True, ignorePunctuation=True, announceCapital=True)        
diff --git a/src/fenrir-package/commands/commands/review_next_char.py b/src/fenrir-package/commands/commands/review_next_char.py
index a35c4008..aa74a972 100644
--- a/src/fenrir-package/commands/commands/review_next_char.py
+++ b/src/fenrir-package/commands/commands/review_next_char.py
@@ -25,8 +25,8 @@ class command():
         self.env['screenData']['newCursorReview']['x'], self.env['screenData']['newCursorReview']['y'], currChar = \
           char_utils.getNextChar(self.env['screenData']['newCursorReview']['x'], self.env['screenData']['newCursorReview']['y'], self.env['screenData']['newContentText'])
         
-        if currChar.strip(" \t\n") == '':
-            self.env['runtime']['outputManager'].presentText("blank", interrupt=True)
+        if currChar.isspace():
+            self.env['runtime']['outputManager'].presentText("space", interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(currChar, interrupt=True, ignorePunctuation=True, announceCapital=True)
    
diff --git a/src/fenrir-package/commands/commands/review_next_line.py b/src/fenrir-package/commands/commands/review_next_line.py
index df0a0aec..94966046 100644
--- a/src/fenrir-package/commands/commands/review_next_line.py
+++ b/src/fenrir-package/commands/commands/review_next_line.py
@@ -25,7 +25,7 @@ class command():
         self.env['screenData']['newCursorReview']['x'], self.env['screenData']['newCursorReview']['y'], currLine = \
           line_utils.getNextLine(self.env['screenData']['newCursorReview']['x'], self.env['screenData']['newCursorReview']['y'], self.env['screenData']['newContentText'])
         
-        if currLine.strip(" \t\n") == '':
+        if currLine.isspace():
             self.env['runtime']['outputManager'].presentText("blank", soundIcon='EmptyLine', interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(currLine, interrupt=True)
diff --git a/src/fenrir-package/commands/commands/review_next_word.py b/src/fenrir-package/commands/commands/review_next_word.py
index ace9490f..c41c6f5d 100644
--- a/src/fenrir-package/commands/commands/review_next_word.py
+++ b/src/fenrir-package/commands/commands/review_next_word.py
@@ -25,7 +25,7 @@ class command():
         self.env['screenData']['newCursorReview']['x'], self.env['screenData']['newCursorReview']['y'], currWord = \
           word_utils.getNextWord(self.env['screenData']['newCursorReview']['x'], self.env['screenData']['newCursorReview']['y'], self.env['screenData']['newContentText'])
         
-        if currWord.strip(" \t\n") == '':
+        if currWord.isspace():
             self.env['runtime']['outputManager'].presentText("blank", interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(currWord, interrupt=True)
diff --git a/src/fenrir-package/commands/commands/review_prev_char.py b/src/fenrir-package/commands/commands/review_prev_char.py
index 4f5c704b..6cfb8705 100644
--- a/src/fenrir-package/commands/commands/review_prev_char.py
+++ b/src/fenrir-package/commands/commands/review_prev_char.py
@@ -25,8 +25,8 @@ class command():
         self.env['screenData']['newCursorReview']['x'], self.env['screenData']['newCursorReview']['y'], currChar = \
           char_utils.getPrevChar(self.env['screenData']['newCursorReview']['x'], self.env['screenData']['newCursorReview']['y'], self.env['screenData']['newContentText'])
         
-        if currChar.strip(" \t\n") == '':
-            self.env['runtime']['outputManager'].presentText("blank", interrupt=True)
+        if currChar.isspace():
+            self.env['runtime']['outputManager'].presentText("space", interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(currChar, interrupt=True, ignorePunctuation=True, announceCapital=True)
     
diff --git a/src/fenrir-package/commands/commands/review_prev_line.py b/src/fenrir-package/commands/commands/review_prev_line.py
index 746ce5d4..16d1f135 100644
--- a/src/fenrir-package/commands/commands/review_prev_line.py
+++ b/src/fenrir-package/commands/commands/review_prev_line.py
@@ -23,7 +23,7 @@ class command():
         self.env['screenData']['newCursorReview']['x'], self.env['screenData']['newCursorReview']['y'], currLine = \
           line_utils.getPrevLine(self.env['screenData']['newCursorReview']['x'], self.env['screenData']['newCursorReview']['y'], self.env['screenData']['newContentText'])
         
-        if currLine.strip(" \t\n") == '':
+        if currLine.isspace():
             self.env['runtime']['outputManager'].presentText("blank", soundIcon='EmptyLine', interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(currLine, interrupt=True)
diff --git a/src/fenrir-package/commands/commands/review_prev_word.py b/src/fenrir-package/commands/commands/review_prev_word.py
index 683da62b..5052723f 100644
--- a/src/fenrir-package/commands/commands/review_prev_word.py
+++ b/src/fenrir-package/commands/commands/review_prev_word.py
@@ -23,7 +23,7 @@ class command():
         self.env['screenData']['newCursorReview']['x'], self.env['screenData']['newCursorReview']['y'], currWord = \
           word_utils.getPrevWord(self.env['screenData']['newCursorReview']['x'], self.env['screenData']['newCursorReview']['y'], self.env['screenData']['newContentText'])
         
-        if currWord.strip(" \t\n") == '':
+        if currWord.isspace()':
             self.env['runtime']['outputManager'].presentText("blank", interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(currWord, interrupt=True)
diff --git a/src/fenrir-package/commands/commands/review_up.py b/src/fenrir-package/commands/commands/review_up.py
index 129ab8b9..9637f9e2 100644
--- a/src/fenrir-package/commands/commands/review_up.py
+++ b/src/fenrir-package/commands/commands/review_up.py
@@ -21,7 +21,7 @@ class command():
         cursorPos = self.env['runtime']['cursorManager'].getReviewOrTextCursor()
         self.env['screenData']['newCursorReview']['x'], self.env['screenData']['newCursorReview']['y'], upChar = \
           char_utils.getUpChar(self.env['screenData']['newCursorReview']['x'],self.env['screenData']['newCursorReview']['y'], self.env['screenData']['newContentText'])
-        if upChar.strip(" \t\n") == '':
+        if upChar.isspace():
             self.env['runtime']['outputManager'].presentText("line is empty" ,interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(upChar ,interrupt=True, ignorePunctuation=True, announceCapital=True)        
diff --git a/src/fenrir-package/commands/commands/spell_check.py b/src/fenrir-package/commands/commands/spell_check.py
index 2ce82f01..363b8624 100644
--- a/src/fenrir-package/commands/commands/spell_check.py
+++ b/src/fenrir-package/commands/commands/spell_check.py
@@ -44,9 +44,10 @@ class command():
         newContent = self.env['screenData']['newContentText'].split('\n')[cursorPos['y']]
         x, y, currWord =  word_utils.getCurrentWord(cursorPos['x'], 0, newContent)                  
 
-        if currWord != '':
+        if not currWord.isspace():
             if not self.spellChecker.check(currWord):
                 self.env['runtime']['outputManager'].presentText('misspelled',soundIcon='mispell', interrupt=True)
-
+            elif not ignore:
+                self.env['runtime']['outputManager'].presentText('correct',soundIcon='', interrupt=True)            
     def setCallback(self, callback):
         pass
diff --git a/src/fenrir-package/commands/onInput/45000-present_char_if_cursor_change_horizontal.py b/src/fenrir-package/commands/onInput/45000-present_char_if_cursor_change_horizontal.py
index a1920e8c..bb7bc291 100644
--- a/src/fenrir-package/commands/onInput/45000-present_char_if_cursor_change_horizontal.py
+++ b/src/fenrir-package/commands/onInput/45000-present_char_if_cursor_change_horizontal.py
@@ -31,7 +31,7 @@ class command():
           self.env['screenData']['newCursor']['x'] == self.env['screenData']['oldCursor']['x']:
             return
         currChar = self.env['screenData']['newContentText'].split('\n')[self.env['screenData']['newCursor']['y']][self.env['screenData']['newCursor']['x']]
-        if not currChar.strip(" \t\n") == '':
+        if not currChar.isspace():
             self.env['runtime']['outputManager'].presentText(currChar, interrupt=True, ignorePunctuation=True, announceCapital=True)
     def setCallback(self, callback):
         pass
diff --git a/src/fenrir-package/commands/onInput/55000-present_line_if_cursor_change_vertical.py b/src/fenrir-package/commands/onInput/55000-present_line_if_cursor_change_vertical.py
index acda3aa3..da0800f7 100644
--- a/src/fenrir-package/commands/onInput/55000-present_line_if_cursor_change_vertical.py
+++ b/src/fenrir-package/commands/onInput/55000-present_line_if_cursor_change_vertical.py
@@ -28,7 +28,7 @@ class command():
         if self.env['runtime']['inputManager'].noKeyPressed():
             return              
         currLine = self.env['screenData']['newContentText'].split('\n')[self.env['screenData']['newCursor']['y']]
-        if currLine.strip(" \t\n") == '':
+        if currLine.isspace():
             self.env['runtime']['outputManager'].presentText("blank", soundIcon='EmptyLine', interrupt=True)
         else:
             self.env['runtime']['outputManager'].presentText(currLine, interrupt=True)
diff --git a/src/fenrir-package/commands/onInput/62000-spell_check.py b/src/fenrir-package/commands/onInput/62000-spell_check.py
index f3c9aa81..19687ce8 100644
--- a/src/fenrir-package/commands/onInput/62000-spell_check.py
+++ b/src/fenrir-package/commands/onInput/62000-spell_check.py
@@ -69,9 +69,26 @@ class command():
             if not(newContent[self.env['screenData']['newCursor']['x']].strip(" \t\n") == '' and x != self.env['screenData']['newCursor']['x']):
                 return            
 
-        if currWord != '':
-            if not self.spellChecker.check(currWord):
-                self.env['runtime']['outputManager'].presentText('misspelled',soundIcon='mispell', interrupt=False)
+        if currWord == '':
+            return
+        if currWord.startswith('-'):
+            return
+        if currWord.startswith('/'):
+            return
+        if currWord.startswith('#'):
+            return
+        if currWord.startswith('./'):
+            return               
+        if currWord.startswith('@'):
+            return            
+        if currWord.isnumeric():
+            return            
+        if currWord.isdecimal():
+            return
+        if currWord.isspace():
+            return            
+        if not self.spellChecker.check(currWord):
+            self.env['runtime']['outputManager'].presentText('misspelled',soundIcon='mispell', interrupt=False)
 
     def setCallback(self, callback):
         pass