Show/Hide Unicode Formatting Characters Helper

The Show/Hide Unicode Formatting Characters helper allows you to toggle on/off the display of embedded Unicode format characters in the MARC record while using the MARC editor.

Unicode formatting/control characters may be needed primarily to change the default display produced by the Unicode Bidirectional Algorithm. They are used to change the direction of display of right–to–left within left–to–right or left–to–right within right–to–left because not all characters have a defined or strong display direction. This algorithm cannot always make the correct determination as to how one or more characters are to be displayed, and therefore the Unicode formatting characters are used to control that algorithm, so that the characters are displayed in a manner that is pleasing to the user. These formatting characters would generally only be used by those who routinely catalog in non–Latin languages.