Siebel Personalization Administration Guide > Targeting Content by Using Expressions >
Creating Complex Evaluation Flow
You can also use conditional expressions to set up Boolean logic (IF, AND, OR) among the rule sets associated with a view or an applet to create a more complex flow of evaluation.
The results of the evaluation of all the rules in the set are returned to the underlying business component associated with the applet in the form of a search expression. This search expression controls the content displayed in the applet.