This function is case sensitive. If your Codes were initially set up in an uppercase format, you will have to use upper case characters for the F3 key to expand those Codes. If you want to use lower case characters, you will need to do one of 2 things:
1. Change the Codes to lower case characters, or
2. Enter new Activity Codes in a lower case format.
Note: Both upper case and lower case can be saved if you choose not to do Option 1.