Truth in Analysis Line conveys the exact timestamp when analysis on any chart was completed.
There are two kinds of lines:
Yellow lines (Dark Mode Theme) or Blue Lines (Light Mode Theme) mean that the analysis is currently locked at the point in time.
Red lines indicate that the analysis is not locked and the line is updated each time a user changes their analysis.
You can force-refresh any analysis by moving the cursor over the bottom of the line and clicking the button- Refresh & Lock in the expanded timestamp. When you refresh an analysis, it locks the trends at the current point in time until you refresh it again or the analysis becomes stale by moving out of range. If the analysis becomes stale, the line will turn red and the chart will automatically go into live mode.