Non-printing characters are those that are utilized in the authoring of a text but are not visible. They are just used for formatting purposes. Tabs, spaces, and enter keys are among them. Also included here are control characters such as CR and LF which are required to form a text file. These characters are used in the coding process to add spacing between words or sentences, to indicate an em dash or a footnote, or to divide a document into sections. The ASCII table shows these characters located in the 7th column: # 8300 - 8400 The most commonly used non-printing character is the space (20). It is used to insert a blank line before a section, to separate one element of a list from another, or to align text on a page. Other common non-printing characters include tab (9), return (13), newline (10), and carriage return (11). These characters are used in the coding process to format a document with specific attributes or behaviors. They can be placed anywhere in a sentence or paragraph and will not affect the reading order of the text. Formatting commands may apply to some or all of the content within a given element. For example, you can use tabs to indent a block of text by placing a tab after each paragraph.