Black

bold:

Add this in your text to activate the bold extension : <b>YourText</b>

Example:

<b>Welcome</b>= Welcome

Italic:

Add this in your text to activate the italic extension : <i>YourText</i>

Example: 

<i>Welcome</i>= Welcome

inline URL:

Add this in your text to activate the inline URL extension : <a href="YourLink">YourText</a>

Example: <a

href="t.me/h1_se">Welcome</a>= Welcome