ReferenceLine:Hardcoded: x with symbols

Build 988 on revert-buttongroup-tab-styling
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Baseline History
Build 9881c665af
Current build. There are unaccepted changes, so build 927 is still the baseline.
Build 927c24f8ad current baseline
Accepted by Archie Sarre Wood.
Build 834ef3327c
Accepted by Zach Stence.
Build 325ee8f135
Accepted by Zach Stence.
Build 308f94e6d4
Accepted by Archie Sarre Wood.
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