The Explorer index contains the list of all conditions that have been used in this project.

When you select a condition in the Explorer index, the list of all rules that use this condition are shown.
Note that Features (denoted by 6 feat 7.3) and Derived Features (denoted by 6 dfeat 7.3) are included in the list of conditions.
The example below shows the two rules using the condition “HDL_chol is not low”.

6 cond 7.3