Something doesn't work?

The Num lock should always be enabled. If it is disabled when you are attempting an alt code, it may cause errors or unexpected results in some applications. For example, Alt+4 could be interpreted as Alt +, ← which causes the browser to go back if the Num lock is disabled.
If your laptop keyboard doesn't have a separate NumPad, you should hold FN button with Alt button while typing the code.
This method does not work for Linux system, but it is possible to use Unicode.

Arc Symbol

An arc is a portion of a circle. It could be a portion of some other curved shape, such as an ellipse, but it almost always refers to a circle. If the arc length is precisely half the circle, it is called a semicircular arc.

Arc symbolizes beginning and renewal in many cultures. Walking through an archway represents leaving the old and moving into a new phase of life. Aches are also symbolic of the extensiveness of the sky.

The semicircular arc represents the soul and mind, a half perfect, half-divine, and changing part of a human being. The figure is perceived to be broken and having visible and invisible portions. It represents something that is half-conscious and half unconscious.

How to use and type Arc symbol code?

If your keyboard contains separate NumPad, you should be sure that it is enabled. If it is not, press the Num Lock key to activate it then press hold down the Alt key on the left side. Type the number that represents that character or the symbol you want to insert and then release the insert key.
For example, for the greek letter omega Ω press and hold Alt and the type 0234 and then release.
There is another method that works only for word documents. In this method, you should type the characters first then press Alt and X. For example ( 0234 + Alt + X for greek letter omega ).
If you have a keyboard that doesn't have NumPad here is what will work for you. Find the Function key ( FN ) then presses and hold the function key while holding press and release Num LK key; then release FN key. This method will activate the numeric keypad in your laptop.
Then do the same steps as in the previous example.
Notice that in IBM code you don't use 0 (Alt + 255 ) before the code which is different from the windows generator that requires to add 0 (Alt + 0255 ) before the code.

Table of Symbols and Codes

Symbol	Title / Description	Unicode	Code / HTML Code
⦖	Double Right Arc Less-than Bracket	⦖	⦖
◟	Lower Left Quadrant Circular Arc	◟	◟
⦕	Double Left Arc Greater-than Bracket	⦕	⦕
⦔	Right Arc Greater-than Bracket	⦔	⦔
◝	Upper Right Quadrant Circular Arc	◝	◝
◞	Lower Right Quadrant Circular Arc	◞	◞
◜	Upper Left Quadrant Circular Arc	◜	◜
⦓	Left Arc Less-than Bracket	⦓	⦓