$\LaTeX$ User Guide

We welcome $\LaTeX$ experts to use our software!

We provide $\LaTeX$ source code export functionality! We also support $\LaTeX$ code block import, see Smart Paste for details.

So why don't we just use $\LaTeX$ directly? The answer is that using Liii STEM can greatly accelerate your $\LaTeX$ writing! In this guide, we'll explain why Liii STEM can achieve this!

Liii STEM provides a WYSIWYG editing interface along with intuitive shortcuts, Magic Paste, and formula conversion functions. Let's quickly introduce these features!

Magic Paste

If you've never used Mogan or TeXmacs before, the easiest feature to get started with that can immediately speed up your writing is Magic Paste. You only need to use Ctrl+C and Ctrl+V.

Through Magic Paste, users can directly paste content from Large Language Models (LLMs) or $\LaTeX$ source code into Liii STEM. For example, Liii STEM supports copy-pasting content from LLMs while maintaining formula and table formatting. The following example shows the effect of magic pasting from GPT-4:

Currently, Magic Paste supports DeepSeek, ChatGPT, Zhihu, and Doubao. We will soon support OCR, allowing you to even paste your handwritten content into Liii STEM!

For more about Magic Paste, see Magic Paste.

AI Automatic Typesetting!

Liii STEM can not only paste content from external large language models, but also use large language models internally for automatic typesetting. We even support directly interacting with large language models using our rendered text, including mathematics and code. Even more amazing is that the output from large language models is also rendered in Liii STEM's format!

For more about AI integration, see AI Automatic Typesetting Guide.

Built-in Environments

In $\LaTeX$, creating a theorem environment requires definition in the preamble:

\documentclass{article}
\newtheorem{theorem}{Theorem}
\begin{document}

    \begin{theorem}
    Theorem here!
    \end{theorem}

\end{document}

However, in Liii STEM, most $\LaTeX$ environments are built-in. Users can directly insert the required environment through our provided graphical user interface.

Additionally, for some environments that are difficult to edit in $\LaTeX$, Liii STEM provides extremely user-friendly GUI. For example, multi-line formula alignment. In $\LaTeX$, you would input:

\begin{align}
  f (x) \leq & \| g (x) - h (x) \| \\
  \leq & \| g (x) - z (x) \| + \| z (x) - h (x) \| \\
\end{align}

Compare this to inputting in Liii STEM:

Intuitive Shortcuts and Symbol Switching

When editing $\LaTeX$ documents, one of the most laborious parts is memorizing and inputting mathematical symbols. For example, in $\LaTeX$, the code to input $(\alpha \neq \gamma) \rightarrow (\beta \geqslant \theta)$ is:

$(\alpha \neq \gamma) \rightarrow (\beta \geqslant \theta)$

In Liii STEM, the above formula can be input in an intuitive way. For example, $\rightarrow$ can be achieved by typing - followed by >, while $\geq$ can be achieved by typing > followed by =. Liii STEM automatically "glues" these commands into the desired symbols. Here are more examples:

• $\implies$: Type = followed by >.
• $\leqslant$: Type < followed by =.
• $\Leftrightarrow$: Type < followed by = then >.
• $\infty$: Type @ followed by @.
• $\mathbb{R}$: Type R followed by R.

Liii STEM also supports a feature called symbol switching. In Liii STEM's Math Mode, each symbol the user types not only represents a single symbol but also represents a group of related symbols. Users can switch between these symbols by pressing the Tab key. For example, $\alpha$ can be generated by typing A then pressing Tab. Here are some examples:

• $\geq$: Type > followed by = then press Tab.
• $\leq$: Type < followed by = then press Tab.
• $\beta$: Type B then press Tab.
• $\theta$: Type J then press Tab.
• $\Theta$: Type uppercase J then press Tab.
• $\phi$: Type F then press Tab.
• $\Phi$: Type uppercase F then press Tab.

As shown in the figure below, Liii STEM provides hints for most mathematical shortcuts, helping users remember shortcuts they might forget.

For more about shortcuts, read Liii STEM Keyboard Shortcuts