To check the format of a topic with a conditional text area, preview it using a conditional build tag expression you have already defined. You can also define a conditional build tag expression while previewing the topic.
1)Open a topic in the Design Editor.
2)Select Edit > View > View Item.
3)Do one of the following:
•To preview an existing expression, choose it from the Conditional Build Tag Expression menu.
•To define and preview a new expression, click Define, and select tags to exclude from the output. Click OK.
tip: To remove the conditional build tag expression from the preview, select None from the Conditional Build Tag Expression menu.