/src/main/java/org/htmlunit/html/HtmlUnknownElement.java
if ( ( ( !( hasFeature( CSS_RT_DISPLAY_RUBY_TEXT_ALWAYS) ) ) && ( wasCreatedByJavascript( ) ) ) && ( ( getParentNode( ) ) == null) ) {   return DisplayStyle.BLOCK; }
[Delete]
case HtmlMultiColumn.TAG_NAME: if (hasFeature(MULTICOL_BLOCK)) { return DisplayStyle.BLOCK; } break; case HtmlDialog.TAG_NAME: <extra_id_0> return DisplayStyle.NONE; } break; case HtmlSlot.TAG_NAME: if (getPage().getWebClient().getBrowserVersion().hasFeature(SLOT_CONTENTS)) { return DisplayStyle.CONTENTS;