The CSS display Property
Overview
The HTML Directory Element or dir Element
Overview
Array.prototype.concat
Array.prototype.concat() is a function that takes an array and combines it with another array or value/s giving the output of a new combined array.
text-transform
The text-transform
CSS property gives you the ability to change the case of the text.
Don't use the acronym
The acronym tag is used in html to allow the full name of an acronym on hover.