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New feature: Zooming This release adds the ability to "zoom" on the frequency-based charts: Use your mouse's scroll wheel to zoom in and out - or hold the control button and drag a box on the chart to zoom into. New chart type: Group Delay Group delay can now be displayed as a chart, and can also be enabled for the marker data display for both S11 and S21. New chart type: Permeability A new chart, R/ω & X/ω, is available for determining permeability characteristics of toroids. Thanks to David, F4HTQ, for requesting and helping out with this. Logarithmic Y-scale: The VSWR and Permeability charts now have the option of having the Y-scale shown as Linear or Logarithmic. Changes to markers: Now able to display Group Delay for S11 and S21 Markers can be filled or "hollow" Markers can be shown centered, or with the point at the tip Markers can be locked from mouse control by selecting the radio button next to "Show/Hide data" Time-delay reflectometry: Min/max impedance values can be manually set There's a movable marker to measure distance in the TDR chart New scaling function for values: Holger Müller, DG5DBH, contributed new code to show values more correctly, using SI-prefixes. David Hunt provided further changes to avoid losing precision when displaying frequencies for sweep settings. Also included: Several bug fixes! As ever, I look forward to hearing about any feedback, suggestions and bugs!