最近有客户用的电脑是触屏的，所以不用键盘与鼠标，系统的键盘不好看，所以自己设计一个键盘显示，先看下效果图；
How to handle the case where the token \'for\' is used in two different situations in the language to parse? Such as statement and as a \"parameter\" as the following example:
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