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When | When the machine finds an <code>If</code>, it expects a boolean condition – for example, <code>x > 0</code>, which means “the variable x contains a number that is greater than zero” – and it evaluates that condition. If the condition is <code>true</code>, the statements following the <code>then</code> are executed. If not, the execution continues in the following branch – either in the <code>else</code> block (which is usually optional), or if there is no <code>else</code> branch, then after the <code>end If</code>. | ||
After either branch has been executed, control returns to the point after the <code>end If</code>. | After either branch has been executed, control returns to the point after the <code>end If</code>. | ||