diff --git a/Table Tool.xcodeproj/project.pbxproj b/Table Tool.xcodeproj/project.pbxproj
index e35ccfb..7700c64 100644
--- a/Table Tool.xcodeproj/project.pbxproj	
+++ b/Table Tool.xcodeproj/project.pbxproj	
@@ -10,6 +10,7 @@
 		5B338F741EF03D8000D40406 /* Constants.m in Sources */ = {isa = PBXBuildFile; fileRef = 5B338F731EF03D8000D40406 /* Constants.m */; };
 		AA58C3F91CFC4DC600106C66 /* TTFormatViewControllerAccessory.xib in Resources */ = {isa = PBXBuildFile; fileRef = AA58C3F81CFC4DC600106C66 /* TTFormatViewControllerAccessory.xib */; };
 		AAB016721D057426005E3F7A /* Credits.rtf in Resources */ = {isa = PBXBuildFile; fileRef = AAB016711D057426005E3F7A /* Credits.rtf */; };
+		C7F5DC0A234BD37900892C4E /* TTTableView.m in Sources */ = {isa = PBXBuildFile; fileRef = C7F5DC09234BD37900892C4E /* TTTableView.m */; };
 		E109B48B1B5E4598005B4959 /* CSVConfiguration.m in Sources */ = {isa = PBXBuildFile; fileRef = E109B48A1B5E4598005B4959 /* CSVConfiguration.m */; };
 		E109B4921B623924005B4959 /* TTFormatViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = E109B4901B623924005B4959 /* TTFormatViewController.m */; };
 		E109B4931B623924005B4959 /* TTFormatViewController.xib in Resources */ = {isa = PBXBuildFile; fileRef = E109B4911B623924005B4959 /* TTFormatViewController.xib */; };
@@ -49,6 +50,8 @@
 		AA41D3431CF2E7CE00CB3E7D /* Table Tool-Bridging-Header.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "Table Tool-Bridging-Header.h"; sourceTree = "<group>"; };
 		AA58C3F81CFC4DC600106C66 /* TTFormatViewControllerAccessory.xib */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = file.xib; path = TTFormatViewControllerAccessory.xib; sourceTree = "<group>"; };
 		AAB016711D057426005E3F7A /* Credits.rtf */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.rtf; path = Credits.rtf; sourceTree = "<group>"; };
+		C7F5DC08234BD37900892C4E /* TTTableView.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = TTTableView.h; sourceTree = "<group>"; };
+		C7F5DC09234BD37900892C4E /* TTTableView.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = TTTableView.m; sourceTree = "<group>"; };
 		E109B4891B5E4598005B4959 /* CSVConfiguration.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = CSVConfiguration.h; sourceTree = "<group>"; };
 		E109B48A1B5E4598005B4959 /* CSVConfiguration.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = CSVConfiguration.m; sourceTree = "<group>"; };
 		E109B48F1B623924005B4959 /* TTFormatViewController.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = TTFormatViewController.h; sourceTree = "<group>"; };
@@ -152,6 +155,8 @@
 				E1CEF8841B7097280083B957 /* CSVHeuristic.h */,
 				E1CEF8851B7097280083B957 /* CSVHeuristic.m */,
 				AA41D3431CF2E7CE00CB3E7D /* Table Tool-Bridging-Header.h */,
+				C7F5DC08234BD37900892C4E /* TTTableView.h */,
+				C7F5DC09234BD37900892C4E /* TTTableView.m */,
 			);
 			path = "Table Tool";
 			sourceTree = "<group>";
@@ -254,6 +259,7 @@
 			developmentRegion = English;
 			hasScannedForEncodings = 0;
 			knownRegions = (
+				English,
 				en,
 				Base,
 			);
@@ -308,6 +314,7 @@
 				E1CEF8861B7097280083B957 /* CSVHeuristic.m in Sources */,
 				E1CC84E41B4A5F2A00ED8314 /* main.m in Sources */,
 				E1CEF87F1B6A23860083B957 /* TTErrorViewController.m in Sources */,
+				C7F5DC0A234BD37900892C4E /* TTTableView.m in Sources */,
 				E109B48B1B5E4598005B4959 /* CSVConfiguration.m in Sources */,
 				E1CC84E21B4A5F2A00ED8314 /* AppDelegate.m in Sources */,
 				E109B4921B623924005B4959 /* TTFormatViewController.m in Sources */,
diff --git a/Table Tool/Base.lproj/Document.xib b/Table Tool/Base.lproj/Document.xib
index 3aa9636..ec54dd6 100644
--- a/Table Tool/Base.lproj/Document.xib	
+++ b/Table Tool/Base.lproj/Document.xib	
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="12121" systemVersion="16F73" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES" customObjectInstantitationMethod="direct">
+<document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="14490.70" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES" customObjectInstantitationMethod="direct">
     <dependencies>
         <deployment identifier="macosx"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="12121"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="14490.70"/>
         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
     </dependencies>
     <objects>
@@ -27,11 +27,11 @@
             <windowStyleMask key="styleMask" titled="YES" closable="YES" miniaturizable="YES" resizable="YES"/>
             <windowPositionMask key="initialPositionMask" leftStrut="YES" topStrut="YES"/>
             <rect key="contentRect" x="100" y="421" width="837" height="523"/>
-            <rect key="screenRect" x="0.0" y="0.0" width="1920" height="1057"/>
+            <rect key="screenRect" x="0.0" y="0.0" width="3840" height="2137"/>
             <value key="minSize" type="size" width="94" height="200"/>
             <view key="contentView" id="gIp-Ho-8D9">
                 <rect key="frame" x="0.0" y="0.0" width="837" height="523"/>
-                <autoresizingMask key="autoresizingMask"/>
+                <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                 <subviews>
                     <splitView dividerStyle="thin" translatesAutoresizingMaskIntoConstraints="NO" id="rW8-oV-UJz">
                         <rect key="frame" x="0.0" y="0.0" width="837" height="523"/>
@@ -46,7 +46,7 @@
                                             <rect key="frame" x="0.0" y="0.0" width="837" height="523"/>
                                             <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                                             <subviews>
-                                                <tableView verticalHuggingPriority="750" allowsExpansionToolTips="YES" columnAutoresizingStyle="none" columnSelection="YES" autosaveColumns="NO" headerView="81d-2U-CFl" id="bLT-tG-Zln">
+                                                <tableView verticalHuggingPriority="750" allowsExpansionToolTips="YES" columnAutoresizingStyle="none" columnSelection="YES" autosaveColumns="NO" headerView="81d-2U-CFl" id="bLT-tG-Zln" customClass="TTTableView">
                                                     <rect key="frame" x="0.0" y="0.0" width="837" height="500"/>
                                                     <autoresizingMask key="autoresizingMask"/>
                                                     <size key="intercellSpacing" width="1" height="1"/>
@@ -75,11 +75,11 @@
                                                 </tableView>
                                             </subviews>
                                         </clipView>
-                                        <scroller key="horizontalScroller" hidden="YES" verticalHuggingPriority="750" horizontal="YES" id="OPb-Ko-dkb">
+                                        <scroller key="horizontalScroller" hidden="YES" wantsLayer="YES" verticalHuggingPriority="750" horizontal="YES" id="OPb-Ko-dkb">
                                             <rect key="frame" x="1" y="119" width="223" height="15"/>
                                             <autoresizingMask key="autoresizingMask"/>
                                         </scroller>
-                                        <scroller key="verticalScroller" hidden="YES" verticalHuggingPriority="750" horizontal="NO" id="IaR-Dt-c0F">
+                                        <scroller key="verticalScroller" hidden="YES" wantsLayer="YES" verticalHuggingPriority="750" horizontal="NO" id="IaR-Dt-c0F">
                                             <rect key="frame" x="224" y="17" width="15" height="102"/>
                                             <autoresizingMask key="autoresizingMask"/>
                                         </scroller>
diff --git a/Table Tool/Document.m b/Table Tool/Document.m
index ac7c1e2..c68c6a1 100644
--- a/Table Tool/Document.m	
+++ b/Table Tool/Document.m	
@@ -13,6 +13,7 @@
 #import "CSVHeuristic.h"
 #import "TTErrorViewController.h"
 #import "ToolbarIcons.h"
+#import "TTTableView.h"
 
 @interface Document () {
     NSCell *dataCell;
@@ -320,6 +321,12 @@ -(NSArray *)getColumnsOrder{
     return columnsOrder.copy;
 }
 
+-(void)tableView:(NSTableView *)tableView mouseDownInHeaderOfTableColumn:(NSTableColumn *)tableColumn {
+    if ([tableView isKindOfClass:[TTTableView class]]) {
+        [((TTTableView *)tableView) resetAnchor];
+    }
+}
+
 #pragma mark - tableViewDataSource (optional methods) - drag & drop
 
 -(void)initValidPBoardTypes
diff --git a/Table Tool/TTTableView.h b/Table Tool/TTTableView.h
new file mode 100644
index 0000000..f485432
--- /dev/null
+++ b/Table Tool/TTTableView.h	
@@ -0,0 +1,19 @@
+//
+//  TTTableView.h
+//  Table Tool
+//
+//  Created by Rob Warner on 10/7/19.
+//  Copyright © 2019 Egger Apps. All rights reserved.
+//
+
+#import <Cocoa/Cocoa.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface TTTableView : NSTableView<NSTableViewDelegate>
+
+-(void)resetAnchor;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/Table Tool/TTTableView.m b/Table Tool/TTTableView.m
new file mode 100644
index 0000000..61b021d
--- /dev/null
+++ b/Table Tool/TTTableView.m	
@@ -0,0 +1,67 @@
+//
+//  TTTableView.m
+//  Table Tool
+//
+//  Created by Rob Warner on 10/7/19.
+//  Copyright © 2019 Egger Apps. All rights reserved.
+//
+
+#import <math.h>
+#import "TTTableView.h"
+
+const int NONE_SELECTED = -1;
+
+@implementation TTTableView
+
+NSInteger anchor = NONE_SELECTED;
+
+- (void)keyDown:(NSEvent *)event {
+    unichar character = [[event characters] characterAtIndex:0];
+    if (character == NSLeftArrowFunctionKey || character == NSRightArrowFunctionKey) {
+        BOOL handled = (event.modifierFlags & NSShiftKeyMask) ?
+        [self selectMultipleColumns: character] :
+            [self selectSingleColumn: character];
+        if (handled) {
+            return;
+        }
+    }
+    [super keyDown:event];
+}
+
+- (BOOL)selectMultipleColumns:(unichar)character {
+    NSInteger selected = self.selectedColumn;
+    if (anchor == NONE_SELECTED) {
+        anchor = selected;
+    }
+
+    NSInteger newColumn = character == NSLeftArrowFunctionKey ? selected - 1 : selected + 1;
+    if (newColumn >= 0 && newColumn < self.numberOfColumns) {
+        if ((character == NSLeftArrowFunctionKey && newColumn >= anchor) || (character == NSRightArrowFunctionKey && newColumn <= anchor)) {
+            [self deselectColumn:selected];
+        }
+        
+        [self selectColumnIndexes:[NSIndexSet indexSetWithIndex:newColumn] byExtendingSelection:YES];
+
+        return YES;
+    }
+    
+    return NO;
+}
+
+- (BOOL)selectSingleColumn:(unichar)character {
+    [self resetAnchor];
+    
+    NSInteger newColumn = character == NSLeftArrowFunctionKey ? self.selectedColumn - 1 : self.selectedColumn + 1;
+    if (newColumn >= 0 && newColumn < self.numberOfColumns) {
+        [self selectColumnIndexes:[NSIndexSet indexSetWithIndex:newColumn] byExtendingSelection:NO];
+        return YES;
+    }
+    
+    return NO;
+}
+
+- (void)resetAnchor {
+    anchor = NONE_SELECTED;
+}
+
+@end