Pre viewing your document.
You can preview your document without saving it ! A temporary file is created which is also being removed after the preview. You also don't have to save your document if you would like to preview it in an external browser the only difference is that these temporary files are removed after you close down the application.
Importing documents.
If you would choose File then Import then you will see that you can import two sorts of document which are Rich Text Files ( *.rtf ) and Word documents ( *.doc ). These files can be imported as a new file but they can also be inserted at cursor position, which means that the contents will be added to an open document.
Export to RTF.
If you would choose File then Export then you will see that you can export your document to Rich Text Files ( *.rtf ). So that you can have your html document as a RTF document. This will show all of your code including tags.
Right Mouse Click
If you have created a new document or if you have a document open then press on it with the right mouse button there you can find several options like adding of tags, colors etc see screen shot under here.
You can select a part of then and then press bold then the selected part of text will be bold. This works for everything like colors tags and text formatting.