The standard advice of "save early, save often" applies doubly when you are using an online editor.
If you like the way your web page is shaping up, save a copy to your hard drive. You won't be able to edit the copy with the BoldPlanet WPM* (at least not until the downloadable version is available), but you will be able to open it and edit it in any number of text editors and HTML editors.
A simple way to save a generated page while you are viewing the page is to use your browser's "File / Save" function. However, you may get a warning that the saved file will not be in correct form. What browsers seem to do is smush all the page source code together. It still works as a web page, but the source can be difficult read and work with.
A better approach is to use your browser's "View / Source" or "View / Page Source" menu command. This will open a copy of the page source in your system's default text editor -- MS Notepad, for example. Look over the code, see how it is structured, and reassure yourself that it is nothing but plain text. Then save the source to your computer by using the text editor's "File / Save-as" function. When saving, be sure to give the file a ".htm" or ".html" extension so that it will open in a web browser.
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