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Slide notes: We will now see how a Tag can call a Program for a Result. We have inserted a new Tag in this layout, and it is Tag number 2.

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Slide notes: We need to state the name of the Program, called a Subroutine, that will be called to produce the Tag result.

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Slide notes: The 1st Argument is mandatory, the rest are optional. In other words, we will use 1, 2, 3, 4 or 5 Arguments that will be passed to the Subroutine, and any indicated arguments will be the numbers of Working Variables. The Working Variables may be assigned with any required Values before the time, and the Subroutine may also update any of these Working Variables before they are passed back to DocWriter. The 1st and primary Argument will be the Tag Result.

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Slide notes: This is the Help.

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Slide notes: This is what our demo program looks like. As we can see on the 1st line, we are using only 1 argument, and we update this argument with the Value of 'hello'. Therefore, the result in the Report should be 'hello'.

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Slide notes: And we see in the Report that 'hello' is duly displayed. So this is an example of how a Tag can use a Program Call to find it's value.

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