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+# Footnotes
+
+!> Footnotes requires an understanding of [Sections](usage/sections.md).
+
+Use footnotes and endnotes to explain, comment on, or provide references to something in a document. Usually, footnotes appear at the bottom of the page.
+
+## Example
+
+```ts
+const doc = new Document({
+    footnotes: {
+        1: { children: [new Paragraph("Foo"), new Paragraph("Bar")] },
+        2: { children: [new Paragraph("Test")] },
+    },
+    sections: [
+        {
+            children: [
+                new Paragraph({
+                    children: [
+                        new TextRun({
+                            children: ["Hello"],
+                        }),
+                        new FootnoteReferenceRun(1),
+                        new TextRun({
+                            children: [" World!"],
+                        }),
+                        new FootnoteReferenceRun(2),
+                    ],
+                }),
+            ],
+        },
+    ],
+});
+```
+
+## Usage
+
+Footnotes requires an entry into the `footnotes` array in the `Document` constructor, and a `FootnoteReferenceRun` in the `Paragraph` constructor.
+
+`footnotes` is an object of number to `Footnote` objects. The number is the reference number, and the `Footnote` object is the content of the footnote. The `Footnote` object has a `children` property, which is an array of `Paragraph` objects.
+
+`FootnoteReferenceRun` is a `Run` object, which are added to `Paragraph`s. It takes a number as a parameter, which is the reference number of the footnote.