When running certain prompt types in Strategy Web 9.x and above, the interface offers a search option followed by a Match Case check box.
This functionality allows users to search for specific elements within the prompt available answers. To allow more flexibility, the check box allows the user to restrict the search results only to those that match the case entered, as shown below:

It is possible to control whether this option is enabled or disabled by default for all prompts by setting the following preference in Strategy Web :

Preferences > Project Defaults > Prompts > Case sensitivity: Match case sensitivity by default