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My project/Library/PackageCache/com.unity.ugui/Documentation~/TextMeshPro/RichTextSize.md

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+# Font Size
+
+Use the `<size>` tag to adjust the font size of your text.
+
+You can specify the new size in pixels (`px`), font units (`em`), or percentages (`%`).
+
+Pixel adjustments can be absolute (`5px`, `10px`, and so on) or relative (`+1` or `-1`, for example). Relative sizes are based on the original font size, so they're not cumulative.
+
+Font unit adjustments are always relative to the original font size. For example, `<size=1em>` sets the font size to the original size, `<size=2em>` doubles the size, and `<size=0.5em>` halves it.
+
+**Example:**
+
+```
+<size=100%>Echo <size=80%>Echo <size=60%>Echo <size=40%>Echo <size=20%>Echo
+```
+
+![Example image](../images/TMP_RichTextSize.png)<br/>
+_Adjusting font size_