Step 6: Write something
Insertion should be easy, provided that:
you grasp the idea of structure editing
that either turn on element boundaries viewing or know how to click into the structure view
(2) Changing an element
E.g. you wrote a paragraph as some element and now think it should be something else. If "something else" is a legal element in the same context do the following:
select the whole element (in the text window glide the mouse over a boundary, in the structure window click on it)
select an element in the Elements window and click on "Change" below in the same Window
Else, use some creative inserting, cutting, pasting, moving
(3) Merging and splitting
or context (mouse:right) menu. To split an element into 2 sisters, simply insert your mouse where you want to split and "Split". To merge 2 brothers, glide your mouse over both and "Merge".
It often happens by mistake that you have some text inside some element. If you want to "unwrap", just select the element (as above) and click on unwrap in Element Menu or the Context (right-click) menu.
Wrapping some text into some element is something that do frequently with so called "text range elements". E.g. in my Stepbystep DTD I defined elements "Code", "Strong", "Notsure", etc. to be used within paragraphs and list items.
Select the element. Then you can either cut/paste it in the Text editing Window or drag it around in the Structure View. I prefer the further. However be aware that you need to use the "Cut" and not "Delete" button (on my Sun this is not the same).