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.

Trigram Symbol

Trigram symbols are part of the classical Chinese ancient culture I Ching. These symbols are used in Taoist cosmology. They represent the basic principles of reality, shown as a set of eight interrelated concepts. Each symbol consists of three parallel lines, each line either complete or incomplete. They respectively represent yin and yang.

There are eight trigram symbols; each of them has special meaning.

The first symbol is the heaven refers to the creative; the lake represents the joyous. Fire symbol represents the clinging; thunder refers to the arousing, wind means the gentle, water means the abysmal mountain refers to keepings still, and earth means the receptive.

How to use and type Trigram 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
☶	Trigram For Mountain	☶	☶
☵	Trigram For Water	☵	☵
☲	Trigram For Fire	☲	☲
☴	Trigram For Wind	☴	☴
☳	Trigram For Thunder	☳	☳
☰	Trigram For Heaven	☰	☰
☱	Trigram For Lake	☱	☱
☷	Trigram For Earth	☷	☷