Language Point 19

...and show the alternative results should you act in a certain way. (Para. 11)

alternative: a. giving a choice from among more than two things

I will not be able to meet you on Thursday; you must think of an alternative plan.
我周二不能見你，你得另作安排。

The alternative project that was suggested by Mr. Smith will be more expensive.
史密斯先生提出的選擇方案花錢更多。

n. serious choice something that can be chosen instead

Your plan is not workable; we must try to think of an alternative.
你的計劃行不通，我們得另作計劃。

If you want to reach Boston in time for the meeting, you must go by air; there is no alternative.
如果你想按時到波斯頓參加會議，只能坐飛機去，別無選擇。

... should you act in a certain way: if you should act in a certain way

Please notice that here "should" is used in place of "if".

In British English, the structure "If + subject + should + verb" is often used as "Should + subject + verb".

Should you change your mind, let us know. (= If you should change your mind, let us know.)
如果你改變了主意，就告訴我們。

Should you see Harry, give him my regards. (= If you should see Harry, give him my regards.)
要是你見到哈利，替我問候他。

Also please notice the difference between

If you see Harry, give him my regards. (You may see him.)

If you should see Harry, give him my regards. (You might see him.)