how to make' or 'sign
We'll frame that as a question since it did start with 'How to". One suspects the OP may have a language barrier? It's okay.
On your keyboard, do you have key with a pipe
| character? Many keyboards generally have it near the Enter/Return key on the same key as the
\ backslash character.
An OR operator is two of these, side by side:
a || b
On a Windows based machine, we can produce the character using the Alt key in combination with numeral input.
Alt+1+2+4 release will generate |
So doing this twice will produce,