diff --git a/Writerside/images/screenshots/markdown.png b/Writerside/images/screenshots/markdown.png
new file mode 100644
index 00000000..b0567154
Binary files /dev/null and b/Writerside/images/screenshots/markdown.png differ
diff --git a/Writerside/topics/aesthetics.md b/Writerside/topics/aesthetics.md
index f098c223..e6b2dbe6 100644
--- a/Writerside/topics/aesthetics.md
+++ b/Writerside/topics/aesthetics.md
@@ -8,6 +8,8 @@ Colors and fills of geometries can be specified in the following ways:
 
 - HEX (e.g. `"#0000ff"`, `"#00f"`).
 
+- Blank string (`""`) or aliases: `"blank"`, `"transparent"` for a fully transparent color.
+
 - A name, one of:
 
   ![Color names](aesthetics_color.png)
diff --git a/Writerside/topics/charts.md b/Writerside/topics/charts.md
index 8ac666f9..0299ee6e 100644
--- a/Writerside/topics/charts.md
+++ b/Writerside/topics/charts.md
@@ -165,12 +165,15 @@ Examples:
 ## Bivariate Distribution
 
 [`2d bins`](%api_geom%/geom-bin2-d/index.html),
+[`2d hexagonal bins`](%api_geom%/geom-hex/index.html),
 [`2d density`](%api_geom%/geom-density2-d/index.html),
 [`filled 2d density`](%api_geom%/geom-density2-d-filled/index.html)
 
 Examples:
 
 - [2d density](%nb-density_2d%)
+- [Hexagonal heatmap](%nb-geom_hex%)
+- [Absolute unit specification for width and height aesthetics](%nb-param_width_unit%)
 
 
 ## Marginal Plots
diff --git a/Writerside/topics/misc.md b/Writerside/topics/misc.md
index 1f3c63f5..9b40afa2 100644
--- a/Writerside/topics/misc.md
+++ b/Writerside/topics/misc.md
@@ -20,7 +20,7 @@ In tooltips/labels/texts and wherever else there is text, you can use:
 
   <img src="lp_verse.png" alt="The observable LP-verse" width="480"/>
 
-- LaTeX formulas with
+- Limited LaTeX support:
 
     - superscript, e.g. `\( a^b \)`;
     - subscript, e.g. `\( x_i \)`;
@@ -31,6 +31,17 @@ In tooltips/labels/texts and wherever else there is text, you can use:
 
   <img src="latex_support.png" alt="LaTeX Support" width="480"/>
 
+- Limited markdown support:
+
+  - emphasis (`*`, `**`, `***`, `_`, `__`, `___`),
+  - coloring with inline style (`<span style='color:red'>text</span>`),
+  - links with anchor tags (`<a href="https://lets-plot.org">Lets-Plot</a>`), and
+  - multiple lines using double space and a newline delimiter (`\n`).
+
+  See: [markdown.ipynb](%nb-markdown%)
+
+  <img src="markdown.png" alt="Markdown support" width="480"/>
+
 ## Manual Legend
 
 In Lets-Plot, as in ggplot2, legends are automatically generated based on the aesthetic mappings in the plot.
diff --git a/Writerside/v.list b/Writerside/v.list
index dcd38c08..d97bfe2d 100644
--- a/Writerside/v.list
+++ b/Writerside/v.list
@@ -73,6 +73,7 @@
     <var name="nb-geom_curve" value="%nbviewer_cookbook%/geom_curve.ipynb"/>
     <var name="nb-geom_dotplot" value="%nbviewer_cookbook%/geom_dotplot.ipynb"/>
     <var name="nb-geom_function" value="%nbviewer_cookbook%/geom_function.ipynb"/>
+    <var name="nb-geom_hex" value="%nbviewer_cookbook%/geom_hex.ipynb"/>
     <var name="nb-geom_histogram_threshold" value="%nbviewer_cookbook%/geom_histogram_threshold.ipynb"/>
     <var name="nb-geom_lollipop" value="%nbviewer_cookbook%/geom_lollipop.ipynb"/>
     <var name="nb-geom_pie" value="%nbviewer_cookbook%/geom_pie.ipynb"/>
@@ -101,9 +102,11 @@
     <var name="nb-manual_legend" value="%nbviewer_cookbook%/manual_legend.ipynb"/>
     <var name="nb-marginal_layers" value="%nbviewer_cookbook%/marginal_layers.ipynb"/>
     <var name="nb-margins" value="%nbviewer_cookbook%/margins.ipynb"/>
+    <var name="nb-markdown" value="%nbviewer_cookbook%/markdown.ipynb"/>
     <var name="nb-multiple_color_scales" value="%nbviewer_cookbook%/multiple_color_scales.ipynb"/>
     <var name="nb-ordering_examples" value="%nbviewer_cookbook%/ordering_examples.ipynb"/>
     <var name="nb-panel_border" value="%nbviewer_cookbook%/panel_border.ipynb"/>
+    <var name="nb-param_width_unit" value="%nbviewer_cookbook%/param_width_unit.ipynb"/>
     <var name="nb-plot_grid" value="%nbviewer_cookbook%/plot_grid.ipynb"/>
     <var name="nb-position_stack" value="%nbviewer_cookbook%/position_stack.ipynb"/>
     <var name="nb-projection_provided" value="%nbviewer_cookbook%/projection_provided.ipynb"/>
diff --git a/future_changes.md b/future_changes.md
index f954c894..9f3c1c4e 100644
--- a/future_changes.md
+++ b/future_changes.md
@@ -6,6 +6,7 @@ GeoTools [v 32.1](https://github.com/geotools/geotools/releases/tag/32.0)
 ### Added
 
 - Geometries:
+
   - `geomHex()` [[#556](https://github.com/JetBrains/lets-plot/issues/556)].
 
     See [example notebook](https://nbviewer.org/github/JetBrains/lets-plot-kotlin/blob/master/docs/examples/jupyter-notebooks/f-4.10.0/geom_hex.ipynb).
@@ -19,17 +20,19 @@ GeoTools [v 32.1](https://github.com/geotools/geotools/releases/tag/32.0)
     See [example notebook](https://nbviewer.org/github/JetBrains/lets-plot-kotlin/blob/master/docs/examples/jupyter-notebooks/f-4.10.0/geom_pie_params.ipynb).
 
 - Texts and labels:
+
   - `hjust` and `vjust` parameters for axis labels [[#1227](https://github.com/JetBrains/lets-plot/issues/1227)],[[#1230](https://github.com/JetBrains/lets-plot/issues/1230)].
 
-    See: [example notebook](https://nbviewer.org/github/JetBrains/lets-plot-kotlin/master/docs/examples/jupyter-notebooks/f-4.10.0/axis_label_justification.ipynb).
+    See: [example notebook](https://nbviewer.org/github/JetBrains/lets-plot-kotlin/blob/master/docs/examples/jupyter-notebooks/f-4.10.0/axis_label_justification.ipynb).
   
   - multiline support for axis labels [[#948](https://github.com/JetBrains/lets-plot/issues/948)].
 
-    See: [example notebook](https://nbviewer.org/github/JetBrains/lets-plot-kotlin/master/docs/examples/jupyter-notebooks/f-4.10.0/multiline_axis_labels.ipynb).
+    See: [example notebook](https://nbviewer.org/github/JetBrains/lets-plot-kotlin/blob/master/docs/examples/jupyter-notebooks/f-4.10.0/multiline_axis_labels.ipynb).
 
   - Markdown support for plot **title**, **subtitle**, **caption**, and axis labels [[#1256](https://github.com/JetBrains/lets-plot/issues/1256)].
 
     See [example notebook](https://nbviewer.org/github/JetBrains/lets-plot-kotlin/blob/master/docs/examples/jupyter-notebooks/f-4.10.0/markdown.ipynb).
+
 ### Changed
 
 - [**BREAKING**] The `height` parameter has been deprecated for the `geomErrorBar`.
diff --git a/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/geom/geom_errorbar.kt b/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/geom/geom_errorbar.kt
index 9076abab..c829f9cc 100755
--- a/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/geom/geom_errorbar.kt
+++ b/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/geom/geom_errorbar.kt
@@ -70,7 +70,7 @@ import org.jetbrains.letsPlot.tooltips.TooltipOptions
  *  For more info see: [aesthetics.html#line-types](https://lets-plot.org/kotlin/aesthetics.html#line-types).
  * @param size Line width.
  * @param widthUnit default = "res".
- *  Unit for the whisker width of the vertical error bar.
+ *  Unit for the whisker width of the error bar.
  *  Possible values:
  *
  *  - "res": the unit equals the smallest distance between adjacent error bars along the corresponding axis;
diff --git a/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/geom/geom_hex.kt b/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/geom/geom_hex.kt
index d0c3364d..f788d6ac 100644
--- a/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/geom/geom_hex.kt
+++ b/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/geom/geom_hex.kt
@@ -25,9 +25,14 @@ import org.jetbrains.letsPlot.tooltips.TooltipOptions
  * To hide axis tooltips, set "blank" or the result of `elementBlank()`
  * to the `axisTooltip`, `axisTooltipX` or `axisTooltipY` parameter of the `theme()`.
  *
+ * ## Examples
+ *
+ * - [geom_hex.ipynb](https://nbviewer.org/github/JetBrains/lets-plot-docs/blob/master/source/kotlin_examples/cookbook/geom_hex.ipynb)
+ *
  * @param data The data to be displayed in this layer. If null, the default, the data is inherited from the plot
  *  data as specified in the call to [letsPlot][org.jetbrains.letsPlot.letsPlot].
- * @param stat default = `Stat.binhex()`. The statistical transformation to use on the data for this layer.
+ * @param stat default = `Stat.binhex()`.
+ *  The statistical transformation to use on the data for this layer.
  *  Supported transformations: `Stat.identity`, `Stat.bin()`, `Stat.count()`, etc. see [Stat][org.jetbrains.letsPlot.Stat].
  * @param position Position adjustment: `positionIdentity`, `positionStack()`, `positionDodge()`, etc. see
  *  [Position](https://lets-plot.org/kotlin/-lets--plot--kotlin/org.jetbrains.letsPlot.pos/).
diff --git a/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/geom/geom_pie.kt b/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/geom/geom_pie.kt
index 90823c4a..7ff4a5f7 100644
--- a/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/geom/geom_pie.kt
+++ b/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/geom/geom_pie.kt
@@ -49,6 +49,8 @@ import org.jetbrains.letsPlot.tooltips.TooltipOptions
  *
  * - [geom_pie_size_unit.ipynb](https://nbviewer.org/github/JetBrains/lets-plot-docs/blob/master/source/kotlin_examples/cookbook/geom_pie_size_unit.ipynb)
  *
+ * - [geom_pie_params.ipynb](https://nbviewer.org/github/JetBrains/lets-plot-docs/blob/master/source/kotlin_examples/cookbook/geom_pie_params.ipynb)
+ *
  * @param data The data to be displayed in this layer. If null, the default, the data
  *  is inherited from the plot data as specified in the call to [letsPlot][org.jetbrains.letsPlot.letsPlot].
  * @param stat default = `Stat.count2d()`. The statistical transformation to use on the data for this layer.
@@ -106,9 +108,9 @@ import org.jetbrains.letsPlot.tooltips.TooltipOptions
  * @param spacerColor Color for spacers between sectors. By default, the "paper" color is used.
  *  For more info see: [aesthetics.html#color-and-fill](https://lets-plot.org/kotlin/aesthetics.html#color-and-fill).
  * @param start Specify the angle at which the first sector starts. Accept values between 0 and 360.
- * Default is a negative angle of the first sector.
- * @param direction Specify angle direction, 1=clockwise, -1=counter-clockwise.
- * Default is 1.
+ *  Default is a negative angle of the first sector.
+ * @param direction default = 1.
+ *  Specify angle direction, 1=clockwise, -1=counter-clockwise.
  * @param sizeUnit Relates the size of the pie chart to the length of the unit step along one of the axes.
  *  Possible values: "x", "y". If not specified, no fitting is performed.
  * @param fillBy default = "fill" ("fill", "color", "paint_a", "paint_b", "paint_c").
diff --git a/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/themes/theme.kt b/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/themes/theme.kt
index 07a272cb..988bade8 100644
--- a/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/themes/theme.kt
+++ b/plot-api/src/commonMain/kotlin/org/jetbrains/letsPlot/themes/theme.kt
@@ -613,9 +613,7 @@ fun elementText(
  *
  * ## Examples
  *
- * - [themes.ipynb](https://nbviewer.org/github/JetBrains/lets-plot-docs/blob/master/source/kotlin_examples/cookbook/themes.ipynb)
- *
- * - [axis_text_angle.ipynb](https://nbviewer.org/github/JetBrains/lets-plot-docs/blob/master/source/kotlin_examples/cookbook/axis_text_angle.ipynb)
+ * - [markdown.ipynb](https://nbviewer.org/github/JetBrains/lets-plot-docs/blob/master/source/kotlin_examples/cookbook/markdown.ipynb)
  *
  * @param color Text color. Accepts color core as string (HEX or rgb) or Color object.
  * @param family Font family.