tById('wee').value = weeToString(wee);
            } catch (e) {
                reportError(e);
                return;
            }

        });

        document.getElementById('run').addEventListener('click', () => {
            clearError();
            document.getElementById('output').value = '';

            try {
                const weeSrc = document.getElementById('wee').value;

                if (weeSrc.indexOf('exit') === -1) {
                    reportError('error: wee programs must contai