Request: "Done" instead of 0

[compsystems]

Hello
In a presentation of computer algebraic systems, I show the difference between numerical and symbolic languages

Sample

PHP Code:

#include<stdio.h>
int main() {
    printf("%f",x+1);
    return 0;
} 


output: error: 'x' was not declared in this scope

PHP Code:

#include <iostream>
using namespace std;

int main(int argc, char *argv[]) {
    cout << 4/3+1/3 << endl;
    return 0;
} 


output: 1

in the hp-prime
print(4/3+1/3) [enter] show 5/3 ok
but then [esc] show 0 ?

in c++ the output return 0; but the CAS is not c/c++, for this reason this generates confusion on history view, when run the hp-prime in a classroom or you want to take a screenshot

try
print(4/3+1/3) -> 0


Please HP-team return the word "Done" (history view) instead of the number 0 or best the last printing statement

print(4/3+1/3) [enter] show 5/3 ok
but then [esc] -> 5/3

The following screenshot shows the problem by showing zero the sum of the numbers 4/3+1/3.