 Welcome to Data Doctor's video, Mr. E. Heading for Wikitree. Headings keep text organized, which is essential in writing biographies. For Wikitree, profiles should always have these two headings, biography and sources, with the references tagged below sources. But there can be more headings depending on the complexity of the profile, and that's where code comes in. On Wikitree, headings are noted by equal signs. These equal signs make the text larger and involved. This also creates an index or content section at the beginning of a profile. Level 2 headings, such as biography, require 2 equal signs on either side. Level 3 headings, or subheadings, require 3 equal signs on either side. The first equal sign has to be against the left margin. The proper order to use for headings looks like this in a profile's public view. Biography, subheadings, notes, sources, see also, acknowledgments. And like this in the editing screen, with the only difference being that you can see the heading code and the references tagged. Miss any one of these elements and the suggestion is generated. An easy way to tell if something is wrong is that code will show in the profile's public view. Here is an example of one with a space between the left margin and the first equal sign. We know this because equal signs are visible around the word sources, and sources is on the same line as other text. This one is missing equal signs at the end. Again, the first pair of equal signs are visible, but the second set is not, and the heading is on the same line as other text. Here is one that doesn't start with an equal sign. Rather, an asterisk used as code for an indent was placed before it. It also has duplicated headings, which need to be dealt with. And this one has an uneven number of equal signs. We know this because one equal sign is visible. So, with Mr. E heading for Ricky Tree, help him get on equal footing, will you?