href HTML tag attribute. Specifies a URL. W3Schools
non-breaking space & nbsp; Adds a space in HTML. W3Schools
preformatted text (pre) pre HTML tag that defines preformatted text, such as computer code. W3Schools
rel HTML tag attribute. Specifies the relationship between the current document and the linked document. W3Schools
sub HTML tag for subscript text. W3Schools
sup HTML tag for superscript. W3Schools
times & times; HTML symbol for the multiplication sign.
unordered list (ul) HTML tag that defines a unordered list marked with bullets. Used with the li tag to create the list. W3Schools
web safe font Offer compatibility with most modern browsers. W3Schools