Simply edit the *tinyMCE card to your heart's content (on your Wagn — here, you can only edit it if you have the role of Developers). See the TinyMCE configuration documentation to learn about everything that you can do.

Our *tinyMCE card has

auto_resize : true,

...which is why there's a little resize icon at the lower right of edit boxes that you acn click and drag to make them taller or shorter. There's also a line that begins with

theme_advanced_buttons1 : "formatselect,bold,italic,strikethrough,"

...which is why you see the style menu followed by buttons for bold, italics and strikethrough:

You can separate very long lines contained in quotes by putting an endquote and starting a new line with a plus and opening the quote again. We use this trick in our *tinyMCE card to keep theme_advanced_buttons1 and extended_valid_elements from running off the right edge of the card:

*tinyMCE

width: '100%', auto_resize : true, relative_urls: false, theme : "advanced", theme_advanced_buttons1 : "formatselect,bold,italic,strikethrough," + "separator,blockquote,bullist,numlist,hr,separator,undo,redo," + "code", theme_advanced_buttons2 : "", theme_advanced_buttons3 : "", theme_advanced_path : false, theme_advanced_toolbar_location : "top", theme_advanced_toolbar_align : "left", ...