diff --git a/TinnitusAnalyse/.idea/TinnitusAnalyse.iml b/TinnitusAnalyse/.idea/TinnitusAnalyse.iml
index 85c7612..aa619a2 100644
--- a/TinnitusAnalyse/.idea/TinnitusAnalyse.iml
+++ b/TinnitusAnalyse/.idea/TinnitusAnalyse.iml
@@ -4,7 +4,7 @@
     <content url="file://$MODULE_DIR$">
       <excludeFolder url="file://$MODULE_DIR$/venv" />
     </content>
-    <orderEntry type="inheritedJdk" />
+    <orderEntry type="jdk" jdkName="Python 3.5" jdkType="Python SDK" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
   <component name="TestRunnerService">
diff --git a/TinnitusAnalyse/.idea/dictionaries/Julian.xml b/TinnitusAnalyse/.idea/dictionaries/Julian.xml
index 6baa898..1023142 100644
--- a/TinnitusAnalyse/.idea/dictionaries/Julian.xml
+++ b/TinnitusAnalyse/.idea/dictionaries/Julian.xml
@@ -8,10 +8,12 @@
       <w>lautstärke</w>
       <w>linkem</w>
       <w>linkes</w>
+      <w>nachname</w>
       <w>ohren</w>
       <w>rauschen</w>
       <w>rechtem</w>
       <w>rechtes</w>
+      <w>vorname</w>
     </words>
   </dictionary>
 </component>
\ No newline at end of file
diff --git a/TinnitusAnalyse/.idea/misc.xml b/TinnitusAnalyse/.idea/misc.xml
index d1b6639..6c993b7 100644
--- a/TinnitusAnalyse/.idea/misc.xml
+++ b/TinnitusAnalyse/.idea/misc.xml
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.5 (TinnitusAnalyse)" project-jdk-type="Python SDK" />
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.5" project-jdk-type="Python SDK" />
 </project>
\ No newline at end of file
diff --git a/TinnitusAnalyse/.idea/workspace.xml b/TinnitusAnalyse/.idea/workspace.xml
index 5d76b25..052a5c0 100644
--- a/TinnitusAnalyse/.idea/workspace.xml
+++ b/TinnitusAnalyse/.idea/workspace.xml
@@ -1,7 +1,13 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ChangeListManager">
-    <list default="true" id="5b3f2136-e422-4072-84be-e86e40fa2d55" name="Default Changelist" comment="" />
+    <list default="true" id="5b3f2136-e422-4072-84be-e86e40fa2d55" name="Default Changelist" comment="">
+      <change beforePath="$PROJECT_DIR$/.idea/TinnitusAnalyse.iml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/TinnitusAnalyse.iml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/dictionaries/Julian.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/dictionaries/Julian.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/misc.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/misc.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/TinnitusAnalyse_GUI.py" beforeDir="false" afterPath="$PROJECT_DIR$/TinnitusAnalyse_GUI.py" afterDir="false" />
+    </list>
     <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -9,21 +15,12 @@
     <option name="LAST_RESOLUTION" value="IGNORE" />
   </component>
   <component name="FileEditorManager">
-    <leaf SIDE_TABS_SIZE_LIMIT_KEY="300">
-      <file pinned="false" current-in-tab="false">
-        <entry file="file://$USER_HOME$/AppData/Local/Programs/Python/Python35/Lib/tkinter/__init__.py">
-          <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="42840">
-              <caret line="2522" column="16" selection-start-line="2522" selection-start-column="16" selection-end-line="2522" selection-end-column="16" />
-            </state>
-          </provider>
-        </entry>
-      </file>
+    <leaf>
       <file pinned="false" current-in-tab="true">
         <entry file="file://$PROJECT_DIR$/TinnitusAnalyse_GUI.py">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="357">
-              <caret line="21" selection-start-line="21" selection-end-line="21" />
+            <state relative-caret-position="270">
+              <caret line="89" column="74" selection-start-line="89" selection-start-column="74" selection-end-line="89" selection-end-column="74" />
               <folding>
                 <element signature="e#0#54#0" expanded="true" />
               </folding>
@@ -32,8 +29,12 @@
         </entry>
       </file>
       <file pinned="false" current-in-tab="false">
-        <entry file="file://$PROJECT_DIR$/.idea/TinnitusAnalyse.iml">
-          <provider selected="true" editor-type-id="text-editor" />
+        <entry file="file://$USER_HOME$/AppData/Local/Programs/Python/Python35/Lib/tkinter/ttk.py">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="281">
+              <caret line="552" selection-start-line="552" selection-end-line="552" />
+            </state>
+          </provider>
         </entry>
       </file>
     </leaf>
@@ -46,6 +47,11 @@
     </option>
   </component>
   <component name="FindInProjectRecents">
+    <findStrings>
+      <find>ttk</find>
+      <find>mainFrame</find>
+      <find>linkerFrame</find>
+    </findStrings>
     <dirStrings>
       <dir>C:\Users\Julian\PycharmProjects\TinnitusAnalyse</dir>
     </dirStrings>
@@ -60,7 +66,7 @@
       </list>
     </option>
   </component>
-  <component name="ProjectFrameBounds">
+  <component name="ProjectFrameBounds" extendedState="6">
     <option name="x" value="321" />
     <option name="y" value="274" />
     <option name="width" value="1602" />
@@ -71,24 +77,12 @@
     <navigator proportions="" version="1">
       <foldersAlwaysOnTop value="true" />
     </navigator>
-    <panes>
-      <pane id="ProjectPane">
-        <subPane>
-          <expand>
-            <path>
-              <item name="TinnitusAnalyse" type="b2602c69:ProjectViewProjectNode" />
-              <item name="TinnitusAnalyse" type="462c0819:PsiDirectoryNode" />
-            </path>
-          </expand>
-          <select />
-        </subPane>
-      </pane>
-      <pane id="Scope" />
-    </panes>
+    <panes />
   </component>
   <component name="PropertiesComponent">
     <property name="SHARE_PROJECT_CONFIGURATION_FILES" value="true" />
     <property name="last_opened_file_path" value="$PROJECT_DIR$" />
+    <property name="restartRequiresConfirmation" value="false" />
     <property name="settings.editor.selected.configurable" value="com.jetbrains.python.configuration.PyActiveSdkModuleConfigurable" />
   </component>
   <component name="RecentsManager">
@@ -150,14 +144,15 @@
     <servers />
   </component>
   <component name="ToolWindowManager">
-    <frame x="321" y="274" width="1602" height="1093" extended-state="0" />
+    <frame x="-8" y="-8" width="2576" height="1416" extended-state="6" />
+    <editor active="true" />
     <layout>
-      <window_info active="true" content_ui="combo" id="Project" order="0" visible="true" weight="0.29987213" />
+      <window_info content_ui="combo" id="Project" order="0" weight="0.18479118" />
       <window_info id="Structure" order="1" side_tool="true" weight="0.25" />
       <window_info id="Favorites" order="2" side_tool="true" />
       <window_info anchor="bottom" id="Message" order="0" />
       <window_info anchor="bottom" id="Find" order="1" />
-      <window_info anchor="bottom" id="Run" order="2" weight="0.30625" />
+      <window_info active="true" anchor="bottom" id="Run" order="2" visible="true" weight="0.30553392" />
       <window_info anchor="bottom" id="Debug" order="3" weight="0.4" />
       <window_info anchor="bottom" id="Cvs" order="4" weight="0.25" />
       <window_info anchor="bottom" id="Inspection" order="5" weight="0.4" />
@@ -170,22 +165,48 @@
       <window_info anchor="right" id="Ant Build" order="1" weight="0.25" />
       <window_info anchor="right" content_ui="combo" id="Hierarchy" order="2" weight="0.25" />
     </layout>
+    <layout-to-restore>
+      <window_info content_ui="combo" id="Project" order="0" visible="true" weight="0.18479118" />
+      <window_info id="Structure" order="1" side_tool="true" weight="0.25" />
+      <window_info id="Favorites" order="2" side_tool="true" />
+      <window_info anchor="bottom" id="Message" order="0" />
+      <window_info anchor="bottom" id="Find" order="1" />
+      <window_info active="true" anchor="bottom" id="Run" order="2" visible="true" weight="0.30553392" />
+      <window_info anchor="bottom" id="Debug" order="3" weight="0.4" />
+      <window_info anchor="bottom" id="Cvs" order="4" weight="0.25" />
+      <window_info anchor="bottom" id="Inspection" order="5" weight="0.4" />
+      <window_info anchor="bottom" id="TODO" order="6" />
+      <window_info anchor="bottom" id="Version Control" order="7" />
+      <window_info anchor="bottom" id="Terminal" order="8" />
+      <window_info anchor="bottom" id="Event Log" order="9" side_tool="true" />
+      <window_info anchor="bottom" id="Python Console" order="10" />
+      <window_info anchor="right" id="Commander" internal_type="SLIDING" order="0" type="SLIDING" weight="0.4" />
+      <window_info anchor="right" id="Ant Build" order="1" weight="0.25" />
+      <window_info anchor="right" content_ui="combo" id="Hierarchy" order="2" weight="0.25" />
+    </layout-to-restore>
   </component>
   <component name="editorHistoryManager">
+    <entry file="file://$PROJECT_DIR$/.idea/TinnitusAnalyse.iml">
+      <provider selected="true" editor-type-id="text-editor" />
+    </entry>
     <entry file="file://$USER_HOME$/AppData/Local/Programs/Python/Python35/Lib/tkinter/__init__.py">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="42840">
+        <state relative-caret-position="809">
           <caret line="2522" column="16" selection-start-line="2522" selection-start-column="16" selection-end-line="2522" selection-end-column="16" />
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/.idea/TinnitusAnalyse.iml">
-      <provider selected="true" editor-type-id="text-editor" />
+    <entry file="file://$USER_HOME$/AppData/Local/Programs/Python/Python35/Lib/tkinter/ttk.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="281">
+          <caret line="552" selection-start-line="552" selection-end-line="552" />
+        </state>
+      </provider>
     </entry>
     <entry file="file://$PROJECT_DIR$/TinnitusAnalyse_GUI.py">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="357">
-          <caret line="21" selection-start-line="21" selection-end-line="21" />
+        <state relative-caret-position="270">
+          <caret line="89" column="74" selection-start-line="89" selection-start-column="74" selection-end-line="89" selection-end-column="74" />
           <folding>
             <element signature="e#0#54#0" expanded="true" />
           </folding>
diff --git a/TinnitusAnalyse/27130.png b/TinnitusAnalyse/27130.png
new file mode 100644
index 0000000..3ccf6fe
Binary files /dev/null and b/TinnitusAnalyse/27130.png differ
diff --git a/TinnitusAnalyse/Headphones Icon.ico b/TinnitusAnalyse/Headphones Icon.ico
new file mode 100644
index 0000000..5f3629a
Binary files /dev/null and b/TinnitusAnalyse/Headphones Icon.ico differ
diff --git a/TinnitusAnalyse/TinnitusAnalyse_GUI.py b/TinnitusAnalyse/TinnitusAnalyse_GUI.py
index 4fc874a..1d59999 100644
--- a/TinnitusAnalyse/TinnitusAnalyse_GUI.py
+++ b/TinnitusAnalyse/TinnitusAnalyse_GUI.py
@@ -1,12 +1,7 @@
 from tkinter import *  # all the classic tkinter stuff
-from tkinter import ttk  # some newer additional widgets
-
-"""
-Background Funktionen
-"""
-
-
+from tkinter.ttk import Frame, Label, Button, LabelFrame, Combobox, Style, Checkbutton, Entry, Panedwindow
 
+# FUNKTIONEN DIE DURCH GUI KLICKS AUSGEFÜHRT WERDEN---------------------------------------------------------------------
 
 def button_rauschen_minus_press():
     print("Rauschen_Press_Plus pressed")
@@ -20,9 +15,11 @@ def button_rauschen_plus_press():
 def button_linkes_ohr_press():
     print("button linkes ohr pressed")
 
+
 def button_beide_ohren_press():
     print("button beide ohren pressed")
 
+
 def button_rechtes_ohr_press():
     print("button rechtes ohr pressed")
 
@@ -32,94 +29,108 @@ def scale_lautstärke_change(self):
     lautstärke = float(scaleLautstärke.get())
     print(lautstärke)
 
+def button_ohren_synchro():
+    auswahl = comboOhrenSynchro.get() # holt die momentane Auswahl aus combobox
+    print("Einstellungen von:" + auswahl + " auf alle anderen Ohren setzen")
+
+
+# AUFBAU DES ROOT WINDOWS ----------------------------------------------------------------------------------------------
 root = Tk()  # build the main window
 root.title("Tinnitus Analyse")
+#root.iconbitmap('headphones.ico') #todo: fix icon
+root.minsize(width=800, height=600)
+root.resizable(True, True)
+#root.columnconfigure(0, weight=1)
+root.rowconfigure(0, weight=1) # extra platz nach unten wird automatisch von Frames eingenommen
 
-# MainFrame
-mainFrame = ttk.Frame(root, padding="3 3 30 30")  # parent is root, padding is extra space at the edges
-mainFrame.grid(column=0, row=0, sticky=(N, W, E, S))  # the frame sticks to every side of the window when resized
 
-# Frequenz
-labelFrequenz = Label(mainFrame, text="Frequenz [kHz]")
-labelFrequenz.grid(row=0, column=0, sticky="w")     # sticky = w(est) makes the text left aligned
+# DIE DREI OBEREN FRAMES AUFBAUEN---------------------------------------------------------------------------------------
+linkerFrame = LabelFrame(root, text="linkes Ohr", width=100, height = 100, padding="3 3 30 30")  # parent is root, padding is extra space at the edges
+linkerFrame.grid(column=0, row=0, sticky=(N + W + E + S))  # the frame sticks to every side of the window when resized
 
-frequenz = StringVar()  # Frequenz Variable [kHz]
-entryFrequenz = ttk.Entry(mainFrame, width=7, textvariable=frequenz)  # create a field where u can enter text
-entryFrequenz.grid(column=1, row=0, sticky=(W, E))  # position the field
-#   todo: Failproof the entry field to just numbers between a range!
-#   todo: add function to entry change!
+mittlererFrame = LabelFrame(root, text="beide Ohren", width=100, height=100, padding="3 3 30 30")
+mittlererFrame.grid(column=1, row=0, sticky=(N + W + E + S))
 
-# Rauschen
-labelRauschen = Label(mainFrame, text="Rauschen [+/- kHz]", anchor="w")
-labelRauschen.grid(column=0, row=1, sticky="w")
+rechterFrame = LabelFrame(root, text="rechtes Ohr", width=100, height=100, padding="3 3 30 30")
+rechterFrame.grid(column=2, row=0, sticky=(N + W + E + S))
 
-buttonRauschenPlus = Button(mainFrame, text="+", command=button_rauschen_plus_press)
-buttonRauschenPlus.grid(column=1, row=1)
 
-buttonRauschenMinus = Button(mainFrame, text="-", command=button_rauschen_minus_press)
-buttonRauschenMinus.grid(column=2, row=1)
+# DIE DREI OBEREN FRAMES FÜLLEN-----------------------------------------------------------------------------------------
+labelFrames = [linkerFrame, mittlererFrame, rechterFrame]
+for aktLabelFrame in labelFrames:
+    # -------- FREQUENZ ------------------------
+    labelFrequenz = Label(aktLabelFrame, text="Frequenz [kHz]")
+    labelFrequenz.grid(row=0, column=0, sticky=W)     # sticky = w(est) makes the text left aligned
+    frequenz = DoubleVar()  # Frequenz Variable [kHz]
+    entryFrequenz = Entry(aktLabelFrame, textvariable=frequenz)  # create a field where u can enter text
+    entryFrequenz.grid(column=1, row=0, sticky=W)  # position the field
+    #   todo: Failproof the entry field to just numbers between a range!
+    #   todo: add function to entry change!
+    # ----------- RAUSCHEN --------------------
+    # todo: iwas überlegen ich brauch 3 verschiedene stringVars eigentlich für jedes Ohr!!!
+    # todo: add function to entry change
+    labelRauschen = Label(aktLabelFrame, text="Rauschen[+/- kHz]", anchor="w")
+    labelRauschen.grid(column=0, row=1, sticky=W)
+    buttonRauschenPlus = Button(aktLabelFrame, text="+", command=button_rauschen_plus_press)
+    buttonRauschenPlus.grid(column=2, row=1)
+    buttonRauschenMinus = Button(aktLabelFrame, text="-", command=button_rauschen_minus_press)
+    buttonRauschenMinus.grid(column=3, row=1)
+    rauschen = StringVar()  # Rauschen Variable [+/- kHz]
+    entryRauschen = Entry(aktLabelFrame, textvariable=rauschen)  # create a field where u can enter text
+    entryRauschen.grid(column=1, row=1, sticky=W)  # position the field
+    # ------------------ LAUTSTÄRKE ------------------
+    labelLautstärke = Label(aktLabelFrame, text="Lautstärke [%]:")
+    labelLautstärke.grid(column=0, row=3, sticky="w")
+    scaleLautstärke = Scale(aktLabelFrame, from_=0, to=100, orient=HORIZONTAL, length=200, command=scale_lautstärke_change)
+    scaleLautstärke.grid(column=1, row=3, columnspan=2)
+    # ------------ KOMMENTAR ----------------
+    labelKommentar = Label(aktLabelFrame, text="weitere Kommentare:")
+    labelKommentar.grid(column=0, row=4)
+    kommentar = StringVar()  # Rauschen Variable [+/- kHz]
+    entryKommentar = Entry(aktLabelFrame, textvariable=kommentar, width=33)  # create a field where u can enter text
+    entryKommentar.grid(column=1, row=4,  rowspan=4, columnspan=2, sticky=W)
 
-rauschen = StringVar()  # Rauschen Variable [+/- kHz]
-entryRauschen = ttk.Entry(mainFrame, width=7, textvariable=rauschen)  # create a field where u can enter text
-entryRauschen.grid(column=3, row=1)  # position the field
-# todo: add function to entry change
 
-# Linkes / Rechts Ohr
-labelOhren = Label(mainFrame, text="Audioausgabe auf:")
-labelOhren.grid(column=0, row=2, sticky="w")
+# DEN UNTEREN FRAME BAUEN-----------------------------------------------------------------------------------------------
+untererFrame = LabelFrame(root, text="Generelles", width=300, height=100, padding="3 3 30 30")
+untererFrame.grid(column=0, row=1, columnspan=3, sticky=(N + W + E + S))
 
-buttonLinkesOhr = Button(mainFrame, text="linkem Ohr", command=button_linkes_ohr_press)
-buttonLinkesOhr.grid(column=1, row=2)
+# DEN UNTEREN FRAME FÜLLEN----------------------------------------------------------------------------------------------
+# ------------NAMENSEINGABE-------------
+labelNachname = Label(untererFrame, text="Nachname:")
+labelNachname.grid(column=0, row=0)
+nachname = StringVar()
+entryNachname = Entry(untererFrame, textvariable=nachname)
+entryNachname.grid(column=1, row=0)
+labelVorname = Label(untererFrame, text="Vorname:")
+labelVorname.grid(column=2, row=0)
+vorname = StringVar()
+entryVorname = Entry(untererFrame, textvariable=vorname)
+entryVorname.grid(column=3, row=0)
+# ------------------OHRENAUSWAHL-----------
+labelOhren = Label(untererFrame, text="Audioausgabe auf:")
+labelOhren.grid(column=0, row=1, sticky="w")
+buttonLinkesOhr = Button(untererFrame, text="linkem Ohr", command=button_linkes_ohr_press)
+buttonLinkesOhr.grid(column=1, row=1)
+buttonBeideOhren = Button(untererFrame, text="beiden Ohren", command=button_beide_ohren_press)
+buttonBeideOhren.grid(column=2, row=1)
+buttonRechtesOhr = Button(untererFrame, text="rechtem Ohr", command=button_rechtes_ohr_press)
+buttonRechtesOhr.grid(column=3, row=1)
+# --------- OHREN SYNCHRONISIEREN -----------------------
+labelOhrenSynchro = Label(untererFrame, text="Einstellungen von ")
+labelOhrenSynchro.grid(column=0, row=2)
+comboOhrenSynchro = Combobox(untererFrame, values=["Linkes Ohr", "Rechtes Ohr", "Beide Ohren"])
+comboOhrenSynchro.grid(column=1, row=2)
+labelOhrenSynchro2 = Label(untererFrame, text=" für alle anderen Ohren übernehmen")
+labelOhrenSynchro2.grid(column=2, row=2)
+buttonOhrenSynchro = Button(untererFrame, text="Bestätigen", command=button_ohren_synchro)
+buttonOhrenSynchro.grid(column=3, row=2)
 
-buttonBeideOhren = Button(mainFrame, text="beiden Ohren", command=button_beide_ohren_press)
-buttonBeideOhren.grid(column=2, row=2)
-
-buttonRechtesOhr = Button(mainFrame, text="rechtem Ohr", command=button_rechtes_ohr_press)
-buttonRechtesOhr.grid(column=3, row=2)
-
-# Lautstärke
-labelLautstärke = Label(mainFrame, text="Lautstärke [%]:")
-labelLautstärke.grid(column=0, row=3)
-
-scaleLautstärke = Scale(mainFrame, from_=0, to=100, orient=HORIZONTAL, length=200, command=scale_lautstärke_change)
-scaleLautstärke.grid(column=1, row=3, columnspan=2)
+# ----------- SPEICHERN --------------------
+buttonSpeichern = Button(untererFrame, text="SPEICHERN")
+buttonSpeichern.grid(column=6, row=3)
 
 
 
 
-# --------------EXAMPLE GUI----------------------
-# mainframe = ttk.Frame(root, padding="3 3 3 3")  # parent is root, padding is extra space at the edges
-# mainframe.grid(column=0, row=0, sticky=(N, W, E, S))    # the frame sticks to every side of the window when resized
-# root.columnconfigure(0, weight=1)   # if the main window is resized, the frame should expand to take up the extra space
-# root.rowconfigure(0, weight=1)  # if the main window is resized, the frame should expand to take up the extra space
-#
-# frequency = StringVar()     # a StringVar is meant to be used to edit Tkinter widget's texts
-# meters = StringVar()
-#
-# """
-# Frequency Entry
-# """
-# frequency_entry = ttk.Entry(mainframe, width=7, textvariable=frequency)     # create a field where u can enter text
-# frequency_entry.grid(column=2, row=1, sticky=(W, E))                        # position the field
-# ttk.Label(mainframe, text="Frequenz (kHz)").grid(column=1, row=1, sticky=W)  # label the field
-#
-# """
-# Rauschen
-# """
-# frequency_entry = ttk.Entry(mainframe, width=7, textvariable=frequency)     # create a field where u can enter text
-# frequency_entry.grid(column=2, row=1, sticky=(W, E))                        # position the field
-# ttk.Label(mainframe, text="frequency (kHz)").grid(column=1, row=1, sticky=W)  # label the field
-#
-# ttk.Label(mainframe, textvariable=meters).grid(column=2, row=2, sticky=(W, E))
-# ttk.Button(mainframe, text="Calculate", command=calculate).grid(column=3, row=3, sticky=W)
-#
-# #ttk.Label(mainframe, text="frequency (kHz)").grid(column=3, row=1, sticky=W)
-# ttk.Label(mainframe, text="is equivalent to").grid(column=1, row=2, sticky=E)
-# ttk.Label(mainframe, text="meters").grid(column=3, row=2, sticky=W)
-#
-# for child in mainframe.winfo_children(): child.grid_configure(padx=5, pady=5)
-#
-# frequency_entry.focus()
-# root.bind('<Return>', calculate)
-
-root.mainloop()
+root.mainloop()
\ No newline at end of file