Code may refer to any of the following:
1. Code, which can be short for source code, is a term used to describe text that is written using the protocol of a particular language by a computer programmer. Examples include C, Java, Perl, and PHP. Code can also be used in a less formal fashion to refer to text written for markup or styling languages like HTML and CSS (Cascading Style Sheets). For example, you may see people make reference to code in numerous languages, such as "C code," "PHP code," "HTML code," or "CSS code."
2. When writing in HTML, the <code> tag is used to designate that a section of text is computer code.