All graphics from iD-sprite are now symbols that can be used

(re: #3924)

modules/ui/help.js

@@ -159,12 +159,23 @@ export function uiHelp(context) {
             .html(function(d) { return d.title; })
             .on('click', clickHelp);
 
-        toc.append('li')
-            .attr('class','walkthrough')
+        var walkthrough = toc
+            .append('li')
+            .attr('class', 'walkthrough')
             .append('a')
-            .text(t('splash.walkthrough'))
             .on('click', clickWalkthrough);
 
+        walkthrough
+            .append('svg')
+            .attr('class', 'logo logo-walkthrough')
+            .append('use')
+            .attr('xlink:href', '#logo-walkthrough');
+
+        walkthrough
+            .append('div')
+            .text(t('splash.walkthrough'));
+
+
         var content = pane.append('div')
             .attr('class', 'left-content');