Takes multiple arguments.
This function returns:
0– all arguments are logically false
Value of the first argument expression that results in a logically true value
The following expression returns 0, which is logically false.
<or> <i>0</i> <i>0</i> </or>
The following expression returns the string cat, which is also logically true.
<or> <i>0</i> <s>cat</s> </or>