Add initial math documentation

docs/_sidebar.md

@@ -21,6 +21,7 @@
     * [Table of Contents](usage/table-of-contents.md)
     * [Page Numbers](usage/page-numbers.md)
     * [Change Tracking](usage/change-tracking.md)
+    * [Math](usage/math.md)
 	* Styling
         * [Styling with JS](usage/styling-with-js.md)
         * [Styling with XML](usage/styling-with-xml.md)

docs/usage/math.md

@@ -0,0 +1,126 @@
+# Math
+
+!> Math requires an understanding of [Sections](usage/sections.md) and [Paragraphs](usage/paragraph.md).
+
+## Intro
+
+-   To add math, create a `Math` object
+-   Add `MathComponents` inside `Math`
+-   `MathComponents` can have nested `MathComponents` inside. e.g. A fraction where the numerator is a square root, and the demoninator as another fraction. More on `MathComponents` below
+
+## Example
+
+```ts
+new Math({
+    children: [
+        new MathRun("2+2"),
+        new MathFraction({
+            numerator: [new MathRun("hi")],
+            denominator: [new MathRun("2")],
+        }),
+    ],
+}),
+```
+
+This will produce:
+
+<p align="center">
+    <img alt="clippy the assistant" src="images/math-example.png" width="200">
+</p>
+
+## Math Components
+
+`MathComponents` are the unit sized building blocks of an equation in `docx`. A `MathComponent` takes in more nested `MathComponents` until you reach `MathRun`, which has no children. `MathRun` is similar to a [TextRun](usage/text.md).
+
+### Math Run
+
+`MathRun` is the most basic `MathComponent`.
+
+#### Example
+
+```ts
+new MathRun("2+2");
+```
+
+```ts
+new MathRun("hello");
+```
+
+An example of it being used inside `Math`:
+
+```ts
+new Math({
+    children: [
+        new MathRun("2"),
+        new MathRun("+"),
+        new MathRun("2"),
+    ],
+}),
+```
+
+### Math Fraction
+
+`MathFractions` require a `numerator` and a `demoninator`, which are both a list of `MathComponents`
+
+#### Example
+
+```ts
+new MathFraction({
+    numerator: [new MathRun("1")],
+    denominator: [new MathRun("2")],
+}),
+```
+
+```ts
+new MathFraction({
+    numerator: [
+        new MathRun("1"),
+        new MathRadical({
+            child: [new MathRun("2")],
+        }),
+    ],
+    denominator: [new MathRun("2")],
+}),
+```
+
+An example of it being used inside `Math`:
+
+```ts
+new Math({
+    children: [
+        new MathFraction({
+            numerator: [new MathRun("1")],
+            denominator: [new MathRun("2")],
+        }),
+        new MathText("+"),
+        new MathFraction({
+            numerator: [new MathRun("1")],
+            denominator: [new MathRun("2")],
+        }),
+        new MathText("= 1"),
+    ],
+}),
+```
+
+### Sum
+
+A `MathComponent` for `Σ`. It can take a `superScript` and/or `subScript` as arguments to add `MathComponents` (usually limits) on the top and bottom
+
+```ts
+new MathSum({
+    child: [new MathRun("i")],
+}),
+```
+
+```ts
+new MathSum({
+    child: [
+        new MathSuperScript({
+            child: new MathRun("e"),
+            superScript: new MathRun("2"),
+        })
+    ],
+    subScript: [new MathRun("i")],
+    superScript: [new MathRun("10")],
+}),
+```