Article.java

@Override
    public void setTitle(String title) {
        ComponentList componentList = (ComponentList) getComponents(FIELD_NAME_TITLE);
        if (componentList == null) {
            componentList = new ComponentList(getContentContainer().getContent(true), FIELD_NAME_TITLE);
            getContentContainer().getContent(true).put(FIELD_NAME_TITLE, componentList);
        }
        Iterator<Component> compIter = componentList.iterator();
        Component titleComponent = null;
        if (compIter.hasNext()) {
            titleComponent = compIter.next();
        } else {
            titleComponent = new Component(componentList);
            titleComponent.setType("title");
            componentList.add(titleComponent);
        }
        titleComponent.getContent().put("titleText", title);
    }

    @Transient
    public String getTitle() {
        ComponentList componentList = (ComponentList) getComponents(FIELD_NAME_TITLE);
        Iterator<Component> compIter = componentList.iterator();
        Component titleComponent = null;
        if (compIter.hasNext()) {
            titleComponent = compIter.next();
        } else {
            return "";
        }
        return (String) titleComponent.getContent().get("titleText");
    }

title.ftl

<#--
    @icon text_align_left
    @name Title
-->
<#include "../macros/util.ftl"/>
<@dbgShowContextVariables/>
<@inplace.text key="titleText" tag="h2" id="title" style="font-size: ${fontSize ! '14pt'}">${titleText}</@inplace.text>

view-article.ftl

<@inplace.components key="title" min=1 max=1 initial=["title"] valid=["title"]/>