Merge pull request #3818 from jasongrout/docs4

Left Area -> Left Sidebar in menu

docs/source/user/interface.rst

@@ -57,11 +57,11 @@ and a list of tabs in the main work area:
 
 .. _left-sidebar-toggle:
 
-The left sidebar can be collapsed or expanded by selecting "Show Left Area"
+The left sidebar can be collapsed or expanded by selecting "Show Left Sidebar"
 in the View menu or by clicking on the active sidebar tab:
 
 
-.. raw:: html 
+.. raw:: html
 
   <div class="jp-youtube-video">
      <iframe src="https://www.youtube-nocookie.com/embed/PlJGecfetek?rel=0&amp;showinfo=0" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen></iframe>

packages/application-extension/src/index.tsx

@@ -280,7 +280,7 @@ function addCommands(app: JupyterLab, palette: ICommandPalette): void {
 
   command = CommandIDs.toggleLeftArea;
   app.commands.addCommand(command, {
-    label: args => 'Show Left Area',
+    label: args => 'Show Left Sidebar',
     execute: () => {
       if (app.shell.leftCollapsed) {
         app.shell.expandLeft();
@@ -298,7 +298,7 @@ function addCommands(app: JupyterLab, palette: ICommandPalette): void {
 
   command = CommandIDs.toggleRightArea;
   app.commands.addCommand(command, {
-    label: args => 'Show Right Area',
+    label: args => 'Show Right Sidebar',
     execute: () => {
       if (app.shell.rightCollapsed) {
         app.shell.expandRight();