diff --git a/src/main/java/me/towdium/jecalculation/client/gui/IWPicker.java b/src/main/java/me/towdium/jecalculation/client/gui/IWPicker.java
index 61cdc5e..b190098 100644
--- a/src/main/java/me/towdium/jecalculation/client/gui/IWPicker.java
+++ b/src/main/java/me/towdium/jecalculation/client/gui/IWPicker.java
@@ -1,15 +1,20 @@
 package me.towdium.jecalculation.client.gui;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.client.gui.drawables.WContainer;
 import me.towdium.jecalculation.core.labels.ILabel;
 import me.towdium.jecalculation.utils.wrappers.Single;
 
+import javax.annotation.ParametersAreNonnullByDefault;
 import java.util.function.Consumer;
 
 /**
  * Author: towdium
  * Date:   17-9-28.
  */
+@ParametersAreNonnullByDefault
+@SideOnly(Side.CLIENT)
 public interface IWPicker extends IWidget {
     IWPicker setCallback(Consumer<ILabel> callback);
 
diff --git a/src/main/java/me/towdium/jecalculation/client/gui/JecGui.java b/src/main/java/me/towdium/jecalculation/client/gui/JecGui.java
index 1c12d60..7d0ebe1 100644
--- a/src/main/java/me/towdium/jecalculation/client/gui/JecGui.java
+++ b/src/main/java/me/towdium/jecalculation/client/gui/JecGui.java
@@ -1,6 +1,8 @@
 package me.towdium.jecalculation.client.gui;
 
 import cpw.mods.fml.client.config.GuiUtils;
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.JustEnoughCalculation;
 import me.towdium.jecalculation.core.labels.ILabel;
 import me.towdium.jecalculation.nei.NEIPlugin;
@@ -37,6 +39,7 @@ import java.util.function.Function;
  * Date:   8/12/17.
  */
 @ParametersAreNonnullByDefault
+@SideOnly(Side.CLIENT)
 public class JecGui extends GuiContainer {
     public static final int COLOR_GUI_GREY = 0xFFA1A1A1;
     public static final int COLOR_TEXT_RED = 0xFF0000;
diff --git a/src/main/java/me/towdium/jecalculation/client/gui/Resource.java b/src/main/java/me/towdium/jecalculation/client/gui/Resource.java
index 9da9a12..e22e923 100644
--- a/src/main/java/me/towdium/jecalculation/client/gui/Resource.java
+++ b/src/main/java/me/towdium/jecalculation/client/gui/Resource.java
@@ -1,12 +1,18 @@
 package me.towdium.jecalculation.client.gui;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.JustEnoughCalculation;
 import net.minecraft.util.ResourceLocation;
 
+import javax.annotation.ParametersAreNonnullByDefault;
+
 /**
  * Author: towdium
  * Date:   17-8-17.
  */
+@ParametersAreNonnullByDefault
+@SideOnly(Side.CLIENT)
 public class Resource {
     public static final ResourceLocation location = new ResourceLocation(
             JustEnoughCalculation.Reference.MODID, "textures/gui/resources.png");
@@ -20,16 +26,16 @@ public class Resource {
     public static final Resource BTN_SAVE_F = new Resource(42, 0, 14, 14);
     public static final Resource BTN_COPY_N = new Resource(56, 14, 14, 14);
     public static final Resource BTN_COPY_F = new Resource(56, 0, 14, 14);
+    public static final Resource BTN_COPY_D = new Resource(242, 14, 14, 14);
     public static final Resource BTN_DEL_N = new Resource(70, 14, 14, 14);
     public static final Resource BTN_DEL_F = new Resource(70, 0, 14, 14);
     public static final Resource BTN_YES_N = new Resource(84, 14, 14, 14);
     public static final Resource BTN_YES_F = new Resource(84, 0, 14, 14);
     public static final Resource BTN_NO_N = new Resource(98, 14, 14, 14);
     public static final Resource BTN_NO_F = new Resource(98, 0, 14, 14);
-    public static final Resource BTN_DISAMB_D = new Resource(242, 0, 14, 14);
-    public static final Resource BTN_COPY_D = new Resource(242, 14, 14, 14);
     public static final Resource BTN_DISAMB_N = new Resource(112, 14, 14, 14);
     public static final Resource BTN_DISAMB_F = new Resource(112, 0, 14, 14);
+    public static final Resource BTN_DISAMB_D = new Resource(242, 0, 14, 14);
     public static final Resource WGT_BUTTON_N = new Resource(40, 232, 20, 20);
     public static final Resource WGT_BUTTON_F = new Resource(60, 232, 20, 20);
     public static final Resource WGT_BUTTON_D = new Resource(80, 232, 20, 20);
@@ -60,11 +66,14 @@ public class Resource {
     public static final Resource ICN_LABEL_F = new Resource(70, 28, 14, 14);
     public static final Resource ICN_HELP_N = new Resource(84, 42, 14, 14);
     public static final Resource ICN_HELP_F = new Resource(84, 28, 14, 14);
+    public static final Resource ICN_STACK_N = new Resource(98, 42, 14, 14);
+    public static final Resource ICN_STACK_F = new Resource(98, 28, 14, 14);
+    public static final Resource ICN_TEXT_N = new Resource(112, 42, 14, 14);
+    public static final Resource ICN_TEXT_F = new Resource(112, 28, 14, 14);
     public static final Resource LBL_ORE_DICT = new Resource(0, 56, 16, 16);
     public static final Resource LBL_FLUID = new Resource(16, 56, 16, 16);
     public static final Resource LBL_UNIV_B = new Resource(32, 56, 16, 16);
     public static final Resource LBL_UNIV_F = new Resource(48, 56, 16, 16);
-
     protected int xPos, yPos, xSize, ySize;
     protected ResourceLocation rl;
 
diff --git a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WButton.java b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WButton.java
index a90f7c9..bd2d5fe 100644
--- a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WButton.java
+++ b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WButton.java
@@ -1,5 +1,7 @@
 package me.towdium.jecalculation.client.gui.drawables;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.client.gui.JecGui;
 import me.towdium.jecalculation.client.gui.Resource;
 import me.towdium.jecalculation.utils.ClientUtils;
@@ -13,6 +15,7 @@ import javax.annotation.ParametersAreNonnullByDefault;
  * Date:   17-8-17.
  */
 @ParametersAreNonnullByDefault
+@SideOnly(Side.CLIENT)
 public abstract class WButton extends WTooltip {
     protected int xPos, yPos, xSize, ySize;
     protected Runnable lsnrLeft, lsnrRight;
@@ -47,7 +50,7 @@ public abstract class WButton extends WTooltip {
 
     @Override
     public boolean onClicked(JecGui gui, int xMouse, int yMouse, int button) {
-        if (JecGui.mouseIn(xPos + 1, yPos + 1, xSize - 2, ySize - 2, xMouse, yMouse)) {
+        if (!disabled && JecGui.mouseIn(xPos + 1, yPos + 1, xSize - 2, ySize - 2, xMouse, yMouse)) {
             if (button == 0 && lsnrLeft != null) {
                 lsnrLeft.run();
                 ClientUtils.playClickSound(1.0F);
diff --git a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WButtonIcon.java b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WButtonIcon.java
index 6cd72e1..90bdab5 100644
--- a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WButtonIcon.java
+++ b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WButtonIcon.java
@@ -1,5 +1,7 @@
 package me.towdium.jecalculation.client.gui.drawables;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.client.gui.JecGui;
 import me.towdium.jecalculation.client.gui.Resource;
 
@@ -14,6 +16,7 @@ import java.util.List;
  * Date:   17-9-16.
  */
 @ParametersAreNonnullByDefault
+@SideOnly(Side.CLIENT)
 public class WButtonIcon extends WButton {
     protected Resource rNormal, rFocused, rDisabled;
 
@@ -25,6 +28,10 @@ public class WButtonIcon extends WButton {
         this(xPos, yPos, xSize, ySize, normal, focused, null, name);
     }
 
+    public WButtonIcon(int xPos, int yPos, int xSize, int ySize, Resource normal, Resource focused, Resource disabled) {
+        this(xPos, yPos, xSize, ySize, normal, focused, disabled, null);
+    }
+
     public WButtonIcon(int xPos, int yPos, int xSize, int ySize, Resource normal, Resource focused,
                        @Nullable Resource disabled, @Nullable String name) {
         super(xPos, yPos, xSize, ySize, name);
diff --git a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WButtonText.java b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WButtonText.java
index dc1c2c3..8755362 100644
--- a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WButtonText.java
+++ b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WButtonText.java
@@ -1,5 +1,7 @@
 package me.towdium.jecalculation.client.gui.drawables;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.client.gui.JecGui;
 import me.towdium.jecalculation.utils.Utilities;
 
@@ -10,6 +12,7 @@ import javax.annotation.ParametersAreNonnullByDefault;
  * Date:   17-9-16.
  */
 @ParametersAreNonnullByDefault
+@SideOnly(Side.CLIENT)
 public class WButtonText extends WButton {
     public WButtonText(int xPos, int yPos, int xSize, int ySize, String name) {
         super(xPos, yPos, xSize, ySize, name);
diff --git a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WContainer.java b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WContainer.java
index 8f6275c..d02cab3 100644
--- a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WContainer.java
+++ b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WContainer.java
@@ -1,5 +1,7 @@
 package me.towdium.jecalculation.client.gui.drawables;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.client.gui.JecGui;
 import me.towdium.jecalculation.client.gui.IWidget;
 
@@ -12,6 +14,7 @@ import java.util.List;
  * Date:   17-9-14.
  */
 @ParametersAreNonnullByDefault
+@SideOnly(Side.CLIENT)
 public class WContainer implements IWidget {
     protected List<IWidget> widgets = new ArrayList<>();
     protected JecGui gui;
diff --git a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WIcon.java b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WIcon.java
index 6799642..a3e6f8d 100644
--- a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WIcon.java
+++ b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WIcon.java
@@ -1,5 +1,7 @@
 package me.towdium.jecalculation.client.gui.drawables;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.client.gui.JecGui;
 import me.towdium.jecalculation.client.gui.Resource;
 
@@ -12,6 +14,7 @@ import javax.annotation.ParametersAreNonnullByDefault;
  * Date:   17-8-18.
  */
 @ParametersAreNonnullByDefault
+@SideOnly(Side.CLIENT)
 public class WIcon extends WTooltip {
     public int xPos, yPos, xSize, ySize;
     public Resource normal, focused;
diff --git a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WLabel.java b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WLabel.java
index 54da7cf..23c7a43 100644
--- a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WLabel.java
+++ b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WLabel.java
@@ -1,5 +1,7 @@
 package me.towdium.jecalculation.client.gui.drawables;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.client.gui.IWidget;
 import me.towdium.jecalculation.client.gui.JecGui;
 import me.towdium.jecalculation.client.gui.Resource;
@@ -16,6 +18,7 @@ import java.util.stream.IntStream;
  * Date:   17-8-17.
  */
 @ParametersAreNonnullByDefault
+@SideOnly(Side.CLIENT)
 public class WLabel implements IWidget {
     static JecGui.Font font;
 
diff --git a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WLabelGroup.java b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WLabelGroup.java
index 7a0d0d6..ff83319 100644
--- a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WLabelGroup.java
+++ b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WLabelGroup.java
@@ -1,5 +1,7 @@
 package me.towdium.jecalculation.client.gui.drawables;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.client.gui.IWidget;
 import me.towdium.jecalculation.client.gui.JecGui;
 import me.towdium.jecalculation.core.labels.ILabel;
@@ -16,6 +18,7 @@ import java.util.stream.IntStream;
  * Date:   17-8-17.
  */
 @ParametersAreNonnullByDefault
+@SideOnly(Side.CLIENT)
 public class WLabelGroup extends WContainer {
     ArrayList<WLabel> labels = new ArrayList<>();
 
diff --git a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WLabelScroll.java b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WLabelScroll.java
index ba95e59..e10251d 100644
--- a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WLabelScroll.java
+++ b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WLabelScroll.java
@@ -1,5 +1,7 @@
 package me.towdium.jecalculation.client.gui.drawables;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.client.gui.JecGui;
 import me.towdium.jecalculation.core.labels.ILabel;
 import me.towdium.jecalculation.utils.Utilities;
@@ -14,6 +16,7 @@ import java.util.stream.Collectors;
  * Date:   17-9-17.
  */
 @ParametersAreNonnullByDefault
+@SideOnly(Side.CLIENT)
 public class WLabelScroll extends WContainer {
     protected List<ILabel> labels = new ArrayList<>();
     protected List<ILabel> filtered = new ArrayList<>();
diff --git a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WLine.java b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WLine.java
index 33439b7..1e79ee4 100644
--- a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WLine.java
+++ b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WLine.java
@@ -1,5 +1,7 @@
 package me.towdium.jecalculation.client.gui.drawables;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.client.gui.IWidget;
 import me.towdium.jecalculation.client.gui.JecGui;
 import me.towdium.jecalculation.client.gui.Resource;
@@ -11,6 +13,7 @@ import javax.annotation.ParametersAreNonnullByDefault;
  * Date:   17-8-18.
  */
 @ParametersAreNonnullByDefault
+@SideOnly(Side.CLIENT)
 public class WLine implements IWidget {
     public int y;
 
diff --git a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WPage.java b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WPage.java
index 8a48432..2fbab47 100644
--- a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WPage.java
+++ b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WPage.java
@@ -1,5 +1,7 @@
 package me.towdium.jecalculation.client.gui.drawables;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.client.gui.IWidget;
 import me.towdium.jecalculation.client.gui.JecGui;
 import me.towdium.jecalculation.client.gui.Resource;
@@ -13,6 +15,7 @@ import javax.annotation.ParametersAreNonnullByDefault;
  * Date:   17-9-16.
  */
 @ParametersAreNonnullByDefault
+@SideOnly(Side.CLIENT)
 public class WPage implements IWidget {
 
 
diff --git a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WPanel.java b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WPanel.java
index b4df862..53edf00 100644
--- a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WPanel.java
+++ b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WPanel.java
@@ -1,5 +1,7 @@
 package me.towdium.jecalculation.client.gui.drawables;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.client.gui.IWidget;
 import me.towdium.jecalculation.client.gui.JecGui;
 import me.towdium.jecalculation.client.gui.Resource;
@@ -11,6 +13,7 @@ import javax.annotation.ParametersAreNonnullByDefault;
  * Date:   17-9-15.
  */
 @ParametersAreNonnullByDefault
+@SideOnly(Side.CLIENT)
 public class WPanel implements IWidget {
     @Override
     public void onDraw(JecGui gui, int xMouse, int yMouse) {
diff --git a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WRectangle.java b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WRectangle.java
index 091c939..dc5fa62 100644
--- a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WRectangle.java
+++ b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WRectangle.java
@@ -1,5 +1,7 @@
 package me.towdium.jecalculation.client.gui.drawables;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.client.gui.IWidget;
 import me.towdium.jecalculation.client.gui.JecGui;
 
@@ -10,6 +12,7 @@ import javax.annotation.ParametersAreNonnullByDefault;
  * Date:   17-8-22.
  */
 @ParametersAreNonnullByDefault
+@SideOnly(Side.CLIENT)
 public class WRectangle implements IWidget {
     public int xPos, yPos, xSize, ySize, color;
 
diff --git a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WScroll.java b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WScroll.java
index 1e366fc..e11a2c5 100644
--- a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WScroll.java
+++ b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WScroll.java
@@ -1,5 +1,7 @@
 package me.towdium.jecalculation.client.gui.drawables;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.client.gui.IWidget;
 import me.towdium.jecalculation.client.gui.JecGui;
 import me.towdium.jecalculation.client.gui.Resource;
@@ -13,6 +15,7 @@ import java.util.function.Consumer;
  * Date:   17-8-19.
  */
 @ParametersAreNonnullByDefault
+@SideOnly(Side.CLIENT)
 public class WScroll implements IWidget {
     public int xPos, yPos, ySize, current;
     public Consumer<Float> lsnrScroll;
diff --git a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WSearch.java b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WSearch.java
index 4705ac6..42a1e14 100644
--- a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WSearch.java
+++ b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WSearch.java
@@ -1,5 +1,7 @@
 package me.towdium.jecalculation.client.gui.drawables;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.client.gui.JecGui;
 import me.towdium.jecalculation.core.labels.ILabel;
 
@@ -13,6 +15,7 @@ import java.util.function.Consumer;
  * Date:   17-9-28.
  */
 @ParametersAreNonnullByDefault
+@SideOnly(Side.CLIENT)
 public class WSearch extends WContainer {
     WTextField tf;
     List<WLabelScroll> lss;
diff --git a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WSwitcher.java b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WSwitcher.java
index b705318..6227ebf 100644
--- a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WSwitcher.java
+++ b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WSwitcher.java
@@ -1,5 +1,7 @@
 package me.towdium.jecalculation.client.gui.drawables;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.client.gui.IWidget;
 import me.towdium.jecalculation.client.gui.JecGui;
 import me.towdium.jecalculation.client.gui.Resource;
@@ -17,6 +19,7 @@ import java.util.stream.Stream;
  * Date:   17-8-19.
  */
 @ParametersAreNonnullByDefault
+@SideOnly(Side.CLIENT)
 public class WSwitcher implements IWidget {
     public static final int SIZE = 13;
 
@@ -38,14 +41,18 @@ public class WSwitcher implements IWidget {
         this.xSize = xSize;
         this.yPos = yPos;
         this.keys = keys;
-        left = new WButtonIcon(xPos, yPos, SIZE, SIZE, Resource.WGT_ARR_L_N, Resource.WGT_ARR_L_F)
-                .setListenerLeft(() -> move(true));
-        right = new WButtonIcon(xPos + xSize - SIZE, yPos, SIZE, SIZE, Resource.WGT_ARR_R_N, Resource.WGT_ARR_R_F)
-                .setListenerLeft(() -> move(false));
+        left = new WButtonIcon(xPos, yPos, SIZE, SIZE, Resource.WGT_ARR_L_N, Resource.WGT_ARR_L_F,
+                               Resource.WGT_ARR_L_D).setListenerLeft(() -> move(true));
+        right = new WButtonIcon(xPos + xSize - SIZE, yPos, SIZE, SIZE, Resource.WGT_ARR_R_N, Resource.WGT_ARR_R_F,
+                                Resource.WGT_ARR_R_D).setListenerLeft(() -> move(false));
         wRect = new WRectangle(xPos + SIZE, yPos, xSize - 2 * SIZE, SIZE, JecGui.COLOR_GUI_GREY);
         wText = new WText(xPos + SIZE, yPos, xSize - 2 * SIZE, SIZE, JecGui.Font.DEFAULT_SHADOW,
                           () -> keys.get(index.index()));
         index = new Circulator(keys.size());
+        if (keys.size() == 1) {
+            left.setDisabled(true);
+            right.setDisabled(true);
+        }
     }
 
     protected void move(boolean forward) {
diff --git a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WText.java b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WText.java
index 04cc299..264138b 100644
--- a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WText.java
+++ b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WText.java
@@ -1,5 +1,7 @@
 package me.towdium.jecalculation.client.gui.drawables;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.client.gui.IWidget;
 import me.towdium.jecalculation.client.gui.JecGui;
 
@@ -11,6 +13,7 @@ import java.util.function.Supplier;
  * Date:   17-8-21.
  */
 @ParametersAreNonnullByDefault
+@SideOnly(Side.CLIENT)
 public class WText implements IWidget {
     public static final int UNDEFINED = Integer.MAX_VALUE;
 
diff --git a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WTextField.java b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WTextField.java
index 9c9653d..6272d71 100644
--- a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WTextField.java
+++ b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WTextField.java
@@ -1,5 +1,7 @@
 package me.towdium.jecalculation.client.gui.drawables;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.client.gui.JecGui;
 import me.towdium.jecalculation.client.gui.IWidget;
 import net.minecraft.client.Minecraft;
@@ -13,6 +15,7 @@ import java.util.function.Consumer;
  * Date:   17-8-18.
  */
 @ParametersAreNonnullByDefault
+@SideOnly(Side.CLIENT)
 public class WTextField implements IWidget {
     protected int xPos, yPos, xSize;
     GuiTextField textField;
diff --git a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WTooltip.java b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WTooltip.java
index 3546455..8b29d8b 100644
--- a/src/main/java/me/towdium/jecalculation/client/gui/drawables/WTooltip.java
+++ b/src/main/java/me/towdium/jecalculation/client/gui/drawables/WTooltip.java
@@ -1,5 +1,7 @@
 package me.towdium.jecalculation.client.gui.drawables;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.client.gui.IWidget;
 import me.towdium.jecalculation.client.gui.JecGui;
 import me.towdium.jecalculation.utils.Utilities;
@@ -15,6 +17,7 @@ import java.util.List;
  * Date:   17-9-16.
  */
 @ParametersAreNonnullByDefault
+@SideOnly(Side.CLIENT)
 public abstract class WTooltip implements IWidget {
     @Nullable
     public String name;
diff --git a/src/main/java/me/towdium/jecalculation/client/gui/guis/GuiCalculator.java b/src/main/java/me/towdium/jecalculation/client/gui/guis/GuiCalculator.java
index 4206d32..f126d2a 100644
--- a/src/main/java/me/towdium/jecalculation/client/gui/guis/GuiCalculator.java
+++ b/src/main/java/me/towdium/jecalculation/client/gui/guis/GuiCalculator.java
@@ -1,5 +1,7 @@
 package me.towdium.jecalculation.client.gui.guis;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.client.gui.JecGui;
 import me.towdium.jecalculation.client.gui.Resource;
 import me.towdium.jecalculation.client.gui.drawables.*;
@@ -13,6 +15,7 @@ import static me.towdium.jecalculation.client.gui.drawables.WLabel.enumMode.*;
  * Date:   8/14/17.
  */
 @ParametersAreNonnullByDefault
+@SideOnly(Side.CLIENT)
 public class GuiCalculator extends WContainer {
     public GuiCalculator() {
         add(new WPanel());
diff --git a/src/main/java/me/towdium/jecalculation/client/gui/guis/GuiDisambiguation.java b/src/main/java/me/towdium/jecalculation/client/gui/guis/GuiDisambiguation.java
index a693c80..8fc6e38 100644
--- a/src/main/java/me/towdium/jecalculation/client/gui/guis/GuiDisambiguation.java
+++ b/src/main/java/me/towdium/jecalculation/client/gui/guis/GuiDisambiguation.java
@@ -1,5 +1,7 @@
 package me.towdium.jecalculation.client.gui.guis;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.client.gui.IWPicker;
 import me.towdium.jecalculation.client.gui.Resource;
 import me.towdium.jecalculation.client.gui.drawables.*;
@@ -7,6 +9,7 @@ import me.towdium.jecalculation.core.labels.ILabel;
 import me.towdium.jecalculation.core.labels.labels.LabelOreDict;
 import net.minecraft.item.ItemStack;
 
+import javax.annotation.ParametersAreNonnullByDefault;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.stream.Collectors;
@@ -16,6 +19,8 @@ import java.util.stream.IntStream;
  * Author: towdium
  * Date:   17-9-16.
  */
+@ParametersAreNonnullByDefault
+@SideOnly(Side.CLIENT)
 public class GuiDisambiguation extends IWPicker.Simple {
     protected WLabelScroll lsUp;
     protected WLabelScroll lsDown;
diff --git a/src/main/java/me/towdium/jecalculation/client/gui/guis/GuiLabel.java b/src/main/java/me/towdium/jecalculation/client/gui/guis/GuiLabel.java
index cc7fd7d..0a7b279 100644
--- a/src/main/java/me/towdium/jecalculation/client/gui/guis/GuiLabel.java
+++ b/src/main/java/me/towdium/jecalculation/client/gui/guis/GuiLabel.java
@@ -4,6 +4,8 @@ import com.google.common.cache.CacheBuilder;
 import com.google.common.cache.CacheLoader;
 import com.google.common.cache.LoadingCache;
 import com.google.common.cache.Weigher;
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.client.gui.IWidget;
 import me.towdium.jecalculation.client.gui.drawables.WContainer;
 import me.towdium.jecalculation.client.gui.drawables.WPage;
@@ -19,6 +21,7 @@ import java.util.function.Consumer;
  * Date:   17-9-14.
  */
 @ParametersAreNonnullByDefault
+@SideOnly(Side.CLIENT)
 public class GuiLabel extends WContainer {
     WContainer container = new WContainer();
     Consumer<ILabel> callback;
diff --git a/src/main/java/me/towdium/jecalculation/client/gui/guis/GuiRecipe.java b/src/main/java/me/towdium/jecalculation/client/gui/guis/GuiRecipe.java
index 08b514a..07b3078 100644
--- a/src/main/java/me/towdium/jecalculation/client/gui/guis/GuiRecipe.java
+++ b/src/main/java/me/towdium/jecalculation/client/gui/guis/GuiRecipe.java
@@ -24,7 +24,11 @@ public class GuiRecipe extends WContainer {
     WButton buttonCopy = new WButtonIcon(83, 33, 20, 20, Resource.BTN_COPY_N, Resource.BTN_COPY_F, Resource.BTN_COPY_D,
                                          "recipe.copy").setDisabled(true);
     WButton buttonDel = new WButtonIcon(64, 33, 20, 20, Resource.BTN_DEL_N, Resource.BTN_DEL_F, "recipe.clear");
-    WButton buttonLabel = new WButtonIcon(45, 33, 20, 20, Resource.BTN_LABEL_N, Resource.BTN_LABEL_F, "recipe.label");
+    WButton buttonLabel = new WButtonIcon(45, 33, 20, 20, Resource.BTN_LABEL_N, Resource.BTN_LABEL_F, "recipe.label")
+            .setListenerLeft(() -> JecGui.displayGui(new GuiLabel((l) -> {
+                JecGui.displayParent();
+                JecGui.getCurrent().hand = l;
+            })));
     WButton buttonDisamb = new WButtonIcon(102, 33, 20, 20, Resource.BTN_DISAMB_N,
                                            Resource.BTN_DISAMB_F, Resource.BTN_DISAMB_D, "recipe.disamb").setDisabled(true).setListenerLeft(() -> {
         if (disambiguation != null) JecGui.displayGui(new GuiDisambiguation(disambiguation).setCallback(l -> {
@@ -43,7 +47,7 @@ public class GuiRecipe extends WContainer {
 
     public GuiRecipe() {
         add(new WPanel());
-        add(new WSwitcher(7, 7, 162, 2));
+        add(new WSwitcher(7, 7, 162, 1));
         add(new WIcon(7, 63, 21, 20, Resource.ICN_OUTPUT_N, Resource.ICN_OUTPUT_F, "recipe.output"));
         add(new WIcon(7, 87, 21, 20, Resource.ICN_CATALYST_N, Resource.ICN_CATALYST_F, "recipe.catalyst"));
         add(new WIcon(7, 111, 21, 40, Resource.ICN_INPUT_N, Resource.ICN_INPUT_F, "recipe.input"));
diff --git a/src/main/java/me/towdium/jecalculation/client/gui/guis/pickers/PickerSimple.java b/src/main/java/me/towdium/jecalculation/client/gui/guis/pickers/PickerSimple.java
index 9ba33b5..2034d75 100644
--- a/src/main/java/me/towdium/jecalculation/client/gui/guis/pickers/PickerSimple.java
+++ b/src/main/java/me/towdium/jecalculation/client/gui/guis/pickers/PickerSimple.java
@@ -1,5 +1,7 @@
 package me.towdium.jecalculation.client.gui.guis.pickers;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.client.gui.IWPicker;
 import me.towdium.jecalculation.client.gui.Resource;
 import me.towdium.jecalculation.client.gui.drawables.*;
@@ -9,6 +11,7 @@ import me.towdium.jecalculation.core.labels.labels.LabelOreDict;
 import net.minecraftforge.fluids.FluidRegistry;
 import net.minecraftforge.oredict.OreDictionary;
 
+import javax.annotation.ParametersAreNonnullByDefault;
 import java.util.Arrays;
 import java.util.List;
 import java.util.stream.Collectors;
@@ -17,6 +20,8 @@ import java.util.stream.Collectors;
  * Author: towdium
  * Date:   17-9-28.
  */
+@ParametersAreNonnullByDefault
+@SideOnly(Side.CLIENT)
 public class PickerSimple extends IWPicker.Simple {
     /**
      * @param labels  labels to be displayed for selection
@@ -28,6 +33,7 @@ public class PickerSimple extends IWPicker.Simple {
         WTextField tf = new WTextField(25, 7, 90);
         add(new WSearch(l -> callback.value.accept(l), tf, ls));
         add(new WIcon(149, 7, 20, 20, Resource.ICN_HELP_N, Resource.ICN_HELP_F, l18nKey + ".help"));
+        add(new WIcon(7, 7, 20, 20, Resource.ICN_TEXT_N, Resource.ICN_TEXT_F, l18nKey + ".text"));
     }
 
     public static class FluidStack extends PickerSimple {
diff --git a/src/main/java/me/towdium/jecalculation/client/gui/guis/pickers/PickerUniversal.java b/src/main/java/me/towdium/jecalculation/client/gui/guis/pickers/PickerUniversal.java
index b49fcac..5ec8e7e 100644
--- a/src/main/java/me/towdium/jecalculation/client/gui/guis/pickers/PickerUniversal.java
+++ b/src/main/java/me/towdium/jecalculation/client/gui/guis/pickers/PickerUniversal.java
@@ -1,17 +1,22 @@
 package me.towdium.jecalculation.client.gui.guis.pickers;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.client.gui.IWPicker;
 import me.towdium.jecalculation.client.gui.JecGui;
 import me.towdium.jecalculation.client.gui.Resource;
 import me.towdium.jecalculation.client.gui.drawables.*;
 import me.towdium.jecalculation.core.labels.labels.LabelUniversal;
 
+import javax.annotation.ParametersAreNonnullByDefault;
 import java.util.ArrayList;
 
 /**
  * Author: towdium
  * Date:   17-9-29.
  */
+@ParametersAreNonnullByDefault
+@SideOnly(Side.CLIENT)
 public class PickerUniversal extends IWPicker.Simple {
     public PickerUniversal() {
         WLabelScroll scroll = new WLabelScroll(7, 69, 8, 5, WLabel.enumMode.PICKER, true).setLabels(new ArrayList<>());
@@ -21,6 +26,8 @@ public class PickerUniversal extends IWPicker.Simple {
         add(new WSearch(l -> callback.value.accept(l), search, scroll));
         add(new WIcon(149, 45, 20, 20, Resource.ICN_HELP_N, Resource.ICN_HELP_F, "picker_universal.help_search"));
         add(new WIcon(149, 7, 20, 20, Resource.ICN_HELP_N, Resource.ICN_HELP_F, "picker_universal.help_create"));
+        add(new WIcon(7, 45, 20, 20, Resource.ICN_TEXT_N, Resource.ICN_TEXT_F, "picker_universal.text_search"));
+        add(new WIcon(7, 7, 20, 20, Resource.ICN_TEXT_N, Resource.ICN_TEXT_F, "picker_universal.text_create"));
         add(new WLine(36));
         add(new WButtonIcon(95, 7, 20, 20, Resource.BTN_YES_N, Resource.BTN_YES_F).setListenerLeft(() -> {
             if (!create.getText().equals("")) callback.value.accept(new LabelUniversal(create.getText(), 1));
diff --git a/src/main/java/me/towdium/jecalculation/core/labels/ILabel.java b/src/main/java/me/towdium/jecalculation/core/labels/ILabel.java
index 765f2e2..e5eb79a 100644
--- a/src/main/java/me/towdium/jecalculation/core/labels/ILabel.java
+++ b/src/main/java/me/towdium/jecalculation/core/labels/ILabel.java
@@ -1,6 +1,8 @@
 package me.towdium.jecalculation.core.labels;
 
 import com.google.common.base.CaseFormat;
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.client.gui.IWPicker;
 import me.towdium.jecalculation.client.gui.JecGui;
 import me.towdium.jecalculation.client.gui.guis.pickers.PickerSimple;
@@ -67,6 +69,7 @@ public interface ILabel {
 
     NBTTagCompound toNBTTagCompound();
 
+    @SideOnly(Side.CLIENT)
     default void drawLabel(JecGui gui, int xPos, int yPos, boolean center) {
         GlStateManager.pushMatrix();
         GlStateManager.translate(center ? xPos - 8 : xPos, center ? yPos - 8 : yPos, 0);
@@ -81,8 +84,7 @@ public interface ILabel {
      * implement on both side. So this class is created for merging
      * {@link ILabel label(s)}.
      * It uses singleton mode. First registerGuess merge functions, then use
-     * {@link #test(ILabel, ILabel)} and {@link #merge(ILabel, ILabel, boolean)}
-     * to operate the {@link ILabel}.
+     * {@link #merge(ILabel, ILabel, boolean)} to operate the {@link ILabel}.
      * For registering, see {@link RegistryDeserializer}.
      */
     class RegistryMerger {
diff --git a/src/main/java/me/towdium/jecalculation/core/labels/labels/LabelFluidStack.java b/src/main/java/me/towdium/jecalculation/core/labels/labels/LabelFluidStack.java
index 646b4d2..d252035 100644
--- a/src/main/java/me/towdium/jecalculation/core/labels/labels/LabelFluidStack.java
+++ b/src/main/java/me/towdium/jecalculation/core/labels/labels/LabelFluidStack.java
@@ -1,5 +1,7 @@
 package me.towdium.jecalculation.core.labels.labels;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.client.gui.JecGui;
 import me.towdium.jecalculation.client.gui.Resource;
 import me.towdium.jecalculation.core.labels.ILabel;
@@ -87,6 +89,7 @@ public class LabelFluidStack implements ILabel {
     }
 
     @Override
+    @SideOnly(Side.CLIENT)
     public void drawLabel(JecGui gui) {
         gui.drawResource(Resource.LBL_FLUID, 0, 0);
         gui.drawFluid(fluid.getFluid(), 2, 2, 12, 12);
diff --git a/src/main/java/me/towdium/jecalculation/core/labels/labels/LabelItemStack.java b/src/main/java/me/towdium/jecalculation/core/labels/labels/LabelItemStack.java
index ad711e0..4be4804 100644
--- a/src/main/java/me/towdium/jecalculation/core/labels/labels/LabelItemStack.java
+++ b/src/main/java/me/towdium/jecalculation/core/labels/labels/LabelItemStack.java
@@ -1,5 +1,7 @@
 package me.towdium.jecalculation.core.labels.labels;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.client.gui.JecGui;
 import me.towdium.jecalculation.core.labels.ILabel;
 import me.towdium.jecalculation.utils.Utilities;
@@ -67,6 +69,7 @@ public class LabelItemStack extends LabelSimpleAmount {
     }
 
     @Override
+    @SideOnly(Side.CLIENT)
     public void drawLabel(JecGui gui) {
         gui.drawItemStack(0, 0, itemStack, false);
     }
diff --git a/src/main/java/me/towdium/jecalculation/core/labels/labels/LabelOreDict.java b/src/main/java/me/towdium/jecalculation/core/labels/labels/LabelOreDict.java
index 8a355a4..b969225 100644
--- a/src/main/java/me/towdium/jecalculation/core/labels/labels/LabelOreDict.java
+++ b/src/main/java/me/towdium/jecalculation/core/labels/labels/LabelOreDict.java
@@ -1,5 +1,7 @@
 package me.towdium.jecalculation.core.labels.labels;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.JustEnoughCalculation;
 import me.towdium.jecalculation.client.gui.JecGui;
 import me.towdium.jecalculation.client.gui.Resource;
@@ -70,6 +72,7 @@ public class LabelOreDict extends LabelSimpleAmount {
     }
 
     @Override
+    @SideOnly(Side.CLIENT)
     public void drawLabel(JecGui gui) {
         NonNullList<ItemStack> list = NonNullList.create();
         OreDictionary.getOres(name).forEach(is -> {
diff --git a/src/main/java/me/towdium/jecalculation/core/labels/labels/LabelUniversal.java b/src/main/java/me/towdium/jecalculation/core/labels/labels/LabelUniversal.java
index c38ece6..b129940 100644
--- a/src/main/java/me/towdium/jecalculation/core/labels/labels/LabelUniversal.java
+++ b/src/main/java/me/towdium/jecalculation/core/labels/labels/LabelUniversal.java
@@ -1,5 +1,7 @@
 package me.towdium.jecalculation.core.labels.labels;
 
+import cpw.mods.fml.relauncher.Side;
+import cpw.mods.fml.relauncher.SideOnly;
 import me.towdium.jecalculation.client.gui.JecGui;
 import me.towdium.jecalculation.client.gui.Resource;
 import me.towdium.jecalculation.core.labels.ILabel;
@@ -46,6 +48,7 @@ public class LabelUniversal extends LabelSimpleAmount {
     }
 
     @Override
+    @SideOnly(Side.CLIENT)
     public void drawLabel(JecGui gui) {
         gui.drawResource(Resource.LBL_UNIV_B, 0, 0);
         gui.drawResource(Resource.LBL_UNIV_F, 0, 0, (name.hashCode() * 0x131723) & 0xFFFFFF);
diff --git a/src/main/resources/assets/jecalculation/lang/en_US.lang b/src/main/resources/assets/jecalculation/lang/en_US.lang
index 388588a..2cbee02 100644
--- a/src/main/resources/assets/jecalculation/lang/en_US.lang
+++ b/src/main/resources/assets/jecalculation/lang/en_US.lang
@@ -13,6 +13,7 @@ command.state.s_undefined=error state
 gui.gui_calculator.new_recipe.name=New recipe
 gui.common.label.ore_dict=OreDict
 gui.common.label.fluid_stack=Fluid
+gui.common.label.universal=Universal
 
 config.force_client=Force Client