What is the OR operator in an IF statement

Question

In C#, how do I specify OR:

if(this OR that) {do the other thing}

I couldn\'t find it in the help.

Update:

Answer 1

In the format for if

if (this OR that) 

this and that are expression not values. title == "aaaaa" is a valid expression. Also OR is not a valid construct in C#, you have to use ||.