Label tool

With this tool you can add text, Markdown, or mathematical formulas into the infinite canvas.

Modes

The label tool can be used in different modes:

Mode	Description
Text	Adds plain text labels.
Markdown	Adds formatted Markdown labels.

You can write mathematical formulas instead of drawing them by using the text label tool.

The text label tool supports LaTeX for defining mathematical formulas.

LaTeX is a markup language that has many features. You can use it to write mathematical formulas in Butterfly.

It is up to you, but sometimes a properly formatted mathematical expression is preferred over handwriting.

To apply LaTeX to the text you have written, select the text and then press the math symbol in the toolbar.

You need to follow LaTeX syntax for this to work.

To start using LaTeX, you need to know its syntax.

A backslash (\) must precede any LaTeX command to indicate it is a command.

An example command is \int_{7}^{6}, which is used to show the integral symbol:

$\int_{7}^{6}$

Command	Description	Example	Example command
`\sqrt[n]{arg}`	Square root symbol, or nth root	$\sqrt[3]{x+1}$	`\sqrt[3]{x+1}`
`\frac{num}{den}`	Fraction with numerator and denominator	$\frac{a+1}{b-1}$	`\frac{a+1}{b-1}`
`\stackrel{a}{b}`	Places something (`a`) above another (`b`)	$\stackrel{!}{=}$	`\stackrel{!}{=}`
`\left<delimiter>` and `\right<delimiter>`	Scaling delimiters. `\left` must be paired with a `\right`	$\left( \frac{x}{2} \right)$	`\left( \frac{x}{2} \right)`
`\sum_{lower}^{upper}`	Summation symbol with limits	$\sum_{i=1}^{n} i$	`\sum_{i=1}^{n} i`
`\mid`	Vertical bar as relation, such as “divides” or conditional	$a\mid b$	`a\mid b`
`\prod_{lower}^{upper}`	Product symbol with limits	$\prod_{k=1}^{m} k$	`\prod_{k=1}^{m} k`
`\int_{a}^{b}`	Integral with limits	$\int_{0}^{1} x^2,dx$	`\int_{0}^{1} x^2\,dx`
`\langle` and `\rangle`	Angle brackets for inner products or tuples	$\langle v,w\rangle$	`\langle v,w\rangle`
`\in` and `\notin`	Set membership or not membership	$x\in A$ , $y\notin B$	`x\in A`, `y\notin B`
`\forall` and `\exists`	Universal or existential quantifiers	$\forall x\in\mathbb{R},\ \exists y$	`\forall x\in\mathbb{R},\ \exists y`
`\to`	Right arrow for functions or limits	$f:A\to B$ , $x_n\to x$	`f:A\to B`, `x_n\to x`

Property	Default	Description
Mode	Text	The label mode. Available modes are Text and Markdown.
Foreground	Black	The text color.
Scale	2	The scale of the label.
Zoom dependent	false	Changes the label size based on the zoom level.
Style sheet	None	The style sheet used for the label.