How is the global variable 'RESULT' modified in the 'set_global_result' function?

In the set_global_result function, the global variable RESULT is modified by using the following steps:

1. The function does not declare RESULT as a global variable explicitly, but it modifies it directly.
2. Inside the function, the line RESULT=$(($1 * $1)) calculates the square of the input parameter $1 and assigns it to RESULT.

Here's the relevant part of the code:

set_global_result() {
 RESULT=$(($1 * $1))
}

When you call set_global_result with a number, it computes the square of that number and updates the global variable RESULT with the new value. For example, calling set_global_result 6 will set RESULT to 36.