[[heading]<\/strong>Top-level heading inside chapter (H1)[\/heading]]<\/strong>\n[[subheading]<\/strong>Second-level heading inside chapter (H2)[\/subheading]]<\/strong>\n<\/code><\/div>\nDescription<\/strong>: Formats the text as a heading (h1) or subheading (h2). Note that the \"heading\" is not the chapter title, but the next level of headings.\n\nCustom classes may be applied to this shortcode.\n