A simple yet powerful WYSIWYG editor gives you a great number of features: font, font size, bold, italic, underline, strike-through, font coloring, unordered lists, ordered lists, paragraph centering, line height, tables, subscript, and superscript.
You can edit existing links by clicking on then clicking the "Edit" button.
You can export notes individually. To export a note, right-click the note and then select, "Get info." Then there will be a link in the Export section to export the note.