With the base variable declarations and subroutine complete, the program moves on to the main program loop, shown below.
完成了基本变量声明和子例程后，程序将继续进行主程序循环，如下所示。
2
You then use register 127 as your loop counter and register 126 as your base pointer, and perform convert_to_upper on each value until you get to the end of the buffer.
It is best to append these internal links to the document's base URL so that if you need to loop through the list again (as in the next task), you have a full URL.