diff --git a/SemiPlot/SemiPlot.Tests.Unit/UI/Localization/ResourcesTests.cs b/SemiPlot/SemiPlot.Tests.Unit/UI/Localization/ResourcesTests.cs
index c282dec..28c37ac 100644
--- a/SemiPlot/SemiPlot.Tests.Unit/UI/Localization/ResourcesTests.cs
+++ b/SemiPlot/SemiPlot.Tests.Unit/UI/Localization/ResourcesTests.cs
@@ -43,6 +43,7 @@ public void GlyphValues_KeepTheCodePointsTheOperatorSees()
 		Resources.NoValuePlaceholder.Should().Be("\u2014");
 		Resources.DeltaTimeLabel.Should().Be("\u0394t");
 		Resources.DeltaValueLabel.Should().Be("\u0394y");
+		Resources.MarkerLineLabelFormat.Should().Be("{0} \u00b7 {1}");
 	}
 
 	[Fact]
@@ -106,13 +107,13 @@ public void TheRussianSet_ResolvesEveryKeyToANonEmptyValue()
 		}
 	}
 
-	// Three keys are glyphs and share their value by design; every other key has to differ.
+	// Four keys are glyphs and share their value by design; every other key has to differ.
 	[Fact]
 	public void EveryRussianValue_DiffersFromTheNeutralOneOutsideTheGlyphKeys()
 	{
 		var neutral = ReadSet(CultureInfo.InvariantCulture);
 		var russian = ReadSet(RussianCulture);
-		string[] glyphKeys = ["DeltaTimeLabel", "DeltaValueLabel", "NoValuePlaceholder"];
+		string[] glyphKeys = ["DeltaTimeLabel", "DeltaValueLabel", "NoValuePlaceholder", "MarkerLineLabelFormat"];
 
 		foreach (var entry in russian.Where(entry => !glyphKeys.Contains(entry.Key)))
 		{
diff --git a/SemiPlot/SemiPlot.UI/Chart/ChartMarkerLines.cs b/SemiPlot/SemiPlot.UI/Chart/ChartMarkerLines.cs
index 3a71ac9..ec0bb5b 100644
--- a/SemiPlot/SemiPlot.UI/Chart/ChartMarkerLines.cs
+++ b/SemiPlot/SemiPlot.UI/Chart/ChartMarkerLines.cs
@@ -4,6 +4,7 @@
 using ScottPlot.Plottables;
 
 using SemiPlot.Core.Data;
+using SemiPlot.UI.Localization;
 
 namespace SemiPlot.UI.Chart;
 
@@ -142,7 +143,7 @@ private static string LabelTextOf(StoredMarker marker)
 			.ToLocalTime()
 			.ToString(LabelTimeFormat, CultureInfo.CurrentCulture);
 
-		return marker.Label is { } label ? $"{label} \u00B7 {time}" : time;
+		return marker.Label is { } label ? Resources.FormatMarkerLineLabelFormat(label, time) : time;
 	}
 
 	private static double EstimatedLabelWidth(VerticalLine line)
diff --git a/SemiPlot/SemiPlot.UI/Localization/Resources.resx b/SemiPlot/SemiPlot.UI/Localization/Resources.resx
index 03657a9..2b0b7cc 100644
--- a/SemiPlot/SemiPlot.UI/Localization/Resources.resx
+++ b/SemiPlot/SemiPlot.UI/Localization/Resources.resx
@@ -828,4 +828,7 @@
   <data name="MarkerLabelCancel" xml:space="preserve">
     <value>Cancel</value>
   </data>
+  <data name="MarkerLineLabelFormat" xml:space="preserve">
+    <value>{0} · {1}</value>
+  </data>
 </root>
diff --git a/SemiPlot/SemiPlot.UI/Localization/Resources.ru.resx b/SemiPlot/SemiPlot.UI/Localization/Resources.ru.resx
index 38c2c44..d603842 100644
--- a/SemiPlot/SemiPlot.UI/Localization/Resources.ru.resx
+++ b/SemiPlot/SemiPlot.UI/Localization/Resources.ru.resx
@@ -828,4 +828,7 @@
   <data name="MarkerLabelCancel" xml:space="preserve">
     <value>Отмена</value>
   </data>
+  <data name="MarkerLineLabelFormat" xml:space="preserve">
+    <value>{0} · {1}</value>
+  </data>
 </root>
diff --git a/docs/architecture/ui-text.md b/docs/architecture/ui-text.md
index 1579a70..6641046 100644
--- a/docs/architecture/ui-text.md
+++ b/docs/architecture/ui-text.md
@@ -5,7 +5,8 @@ Russian counterpart `Resources.ru.resx`, the startup failure window included. Th
 ASCII: `.editorconfig:25` gives `[*.cs]` `charset = utf-8`, CI's `format check` step gates the byte
 order mark, and the pre-commit hook and CI's `comment gate` step run `terse` over the characters. So
 a glyph with no ASCII form is a resource value: the delta labels (`U+0394` plus `t` and `y`), the
-no-value placeholder (`U+2014`) and the window title all sit in the resx. The Russian set is
+no-value placeholder (`U+2014`), the marker line's label separator (`U+00B7`) and the window title
+all sit in the resx. The Russian set is
 Cyrillic throughout, and the same rule is what keeps it out of the code.
 
 The Russian set calls a pen «перо» (plural «перья») everywhere: the sidebar, the editor, the menu
@@ -400,8 +401,8 @@ reaches the message panel, not this line.
 
 ## The marker menu and label editor's text
 
-`Chart/TrendChartView.axaml` reads every string of the time markers
-(`trend-interaction.md#the-time-markers`):
+`Chart/TrendChartView.axaml` reads every string of the time markers but the line label, which
+`Chart/ChartMarkerLines` formats (`trend-interaction.md#the-time-markers`):
 
 | Key | English / Russian | Where |
 | --- | --- | --- |
@@ -409,6 +410,7 @@ reaches the message panel, not this line.
 | `MarkerMenuRename`, `MarkerMenuDelete` | "Rename" / "Переименовать", "Delete" / "Удалить" | The marker menu |
 | `MarkerLabelPlaceholder` | "Label (optional)" / "Подпись (необязательно)" | The label box's watermark |
 | `MarkerLabelOk`, `MarkerLabelCancel` | "OK" / "ОК", "Cancel" / "Отмена" | The editor's buttons |
+| `MarkerLineLabelFormat` | "{0} · {1}" in both sets | A labelled marker's line: the label, then its local time |
 
 The editor has no message line: nothing in it can be invalid, and the watermark says that an empty box
 is allowed (`ui-theme.md#the-marker-label-editor`). A failed marker write reaches the message panel,