How to ignore capitalization in Beyond Compare 4

BC4 is currently highlighting lines, even when they differ only by capitalization. I want to ignore those.

• In Session Settings, I have UN-checked the box labeled "Character Case".
• I have selected the "Minor" button (sub-text: "Ignore unimportant Differences").
• I have ensured that the file type (.cs file) corresponds to the rules selected (as suggested here).

What else am I missing?

So, I got an answer straight from Scooter support community:

The character case check box only affects default text (text that isn't a string, identifier, comment, etc).

To ignore character case for non-default text, click the Edit Grammar button. In the Grammar tab, select the grammar definition that matches the text that should ignore character case, such as Identifier.

• Click the Gear icon.
• Uncheck This element is case sensitive.
• Click OK until you're back to the main window