### Complete Example Document

Source: https://context7.com/josselinnoirel/cellspace/llms.txt

A full working example demonstrating multiple cellspace features including custom spacing, paragraph column registration, and integration with booktabs and amsmath.

```latex
\documentclass[12pt]{article}
\usepackage[T1]{fontenc}
\usepackage[a4paper, margin=1in]{geometry}
\usepackage{amsmath}
\usepackage[math]{cellspace}
\usepackage{booktabs}
\usepackage{tabularx}

% Configure spacing limits
\setlength{\cellspacetoplimit}{3pt}
\setlength{\cellspacebottomlimit}{3pt}

% Register tabularx column type
\addparagraphcolumntypes{X}

\begin{document}

\section{Scientific Data Table}

\begin{tabular}{Sl Sc Sc}
  \toprule
  \textbf{Quantity} & \textbf{Symbol} & \textbf{Value} \\
  \midrule
  Euler's number & $e$ & $\displaystyle \sum_{n=0}^{\infty} \frac{1}{n!}$ \\
  Pi & $\pi$ & $\displaystyle 4\sum_{k=0}^{\infty} \frac{(-1)^k}{2k+1}$ \\
  Golden ratio & $\phi$ & $\displaystyle \frac{1+\sqrt{5}}{2}$ \\
  \bottomrule
\end{tabular}

\section{Matrix Example}

\[
A = \begin{pmatrix}
  \frac{1}{2} & \frac{1}{3} & \frac{1}{4} \\
  \frac{1}{5} & \frac{1}{6} & \frac{1}{7} \\
  \frac{1}{8} & \frac{1}{9} & \frac{1}{10}
\end{pmatrix}
\]

\section{Wide Table with Tabularx}

\begin{tabularx}{\textwidth}{Sl Sc SX}
  \hline
  \textbf{Term} & \textbf{Formula} & \textbf{Description} \\
  \hline
  Integral & $\displaystyle \int_a^b f(x)\,dx$ &
    The definite integral represents the signed area under the curve \\
  \hline
\end{tabularx}

\end{document}
```

--------------------------------

### Cellspace with Booktabs Package

Source: https://context7.com/josselinnoirel/cellspace/llms.txt

Cellspace integrates with the booktabs package for professional tables. This example uses \\toprule, \\midrule, and \\bottomrule with the 'Sc' column type.

```latex
\documentclass{article}
\usepackage{cellspace}
\usepackage{booktabs}
\usepackage{amsmath}

\setlength{\cellspacetoplimit}{2pt}
\setlength{\cellspacebottomlimit}{2pt}

\begin{document}

\begin{tabular}{@{} Sc @{}}
  \toprule
  \textit{Formula} \\
  \midrule
  $\displaystyle e = 1 + \frac{1}{2} + \frac{1}{6} + \cdots + \frac{1}{k!} + \cdots$ \\
  $\displaystyle \pi = 4 \left( 1 - \frac{1}{3} + \frac{1}{5} + \cdots \right)$ \\
  \bottomrule
\end{tabular}

\end{document}
```

--------------------------------

### Paragraph Columns with Cellspace

Source: https://context7.com/josselinnoirel/cellspace/llms.txt

For paragraph columns (p, m, b), wrap the column specification in braces like S{p{width}}. This example demonstrates proper spacing with long text and mixed column types.

```latex
\documentclass{article}
\usepackage{cellspace}
\usepackage{amsmath}

\setlength{\cellspacetoplimit}{2pt}
\setlength{\cellspacebottomlimit}{2pt}

\begin{document}

% Paragraph column without cellspace - content touches rules
\begin{tabular}{p{5cm}}
  \hline
  $\displaystyle \frac{1}{2}$ Some long text that wraps
  across multiple lines in the cell
  $\displaystyle \frac{1}{2}$ \\
  \hline
\end{tabular}

% Paragraph column with cellspace - proper spacing
\begin{tabular}{S{p{5cm}}}
  \hline
  $\displaystyle \frac{1}{2}$ Some long text that wraps
  across multiple lines in the cell
  $\displaystyle \frac{1}{2}$ \\
  \hline
\end{tabular}

% Mixed columns: regular and paragraph
\begin{tabular}{Sl Sl S{p{3cm}}}
  \hline
  Name & Value & Description \\
  \hline
  Alpha & $\dfrac{1}{2}$ & A detailed explanation \\
  \hline
\end{tabular}

\end{document}
```

--------------------------------

### Basic Table with S Column Modifier

Source: https://context7.com/josselinnoirel/cellspace/llms.txt

Apply the 'S' modifier to column types (l, c, r) to enable automatic spacing. This example shows a comparison between a standard column and an 'Sc' column with fractions.

```latex
\documentclass{article}
\usepackage{cellspace}
\usepackage{amsmath}

\setlength{\cellspacetoplimit}{2pt}
\setlength{\cellspacebottomlimit}{2pt}

\begin{document}

% Without cellspace - fractions touch the hlines
\begin{tabular}{c}
  \hline
  $\displaystyle \frac{1}{2}$ \\
  \hline
\end{tabular}

% With cellspace - proper spacing added automatically
\begin{tabular}{Sc}
  \hline
  $\displaystyle \frac{1}{2}$ \\
  \hline
\end{tabular}

% Multiple columns with cellspace
\begin{tabular}{Sc Sc}
  \hline
  \textit{Bond} & \textit{Distance (\AA)} \\
  \hline
  C--C          & $1.53$ \\
  C--H          & $1.10$ \\
  \hline
\end{tabular}

\end{document}
```

--------------------------------

### Custom Column Modifier Name

Source: https://context7.com/josselinnoirel/cellspace/llms.txt

Use the `column` option to specify a different modifier name if `S` conflicts with other packages. Examples show usage with `O` as the custom modifier.

```latex
\documentclass{article}
% Use O instead of S as the column modifier
\usepackage[column=O]{cellspace}

\setlength{\cellspacetoplimit}{2pt}
\setlength{\cellspacebottomlimit}{2pt}

\begin{document}

% Now use O prefix instead of S
\begin{tabular}{Oc Oc Oc}
  \hline
  A & B & C \\
  \hline
  $\dfrac{1}{2}$ & $\dfrac{1}{3}$ & $\dfrac{1}{4}$ \\
  \hline
\end{tabular}

% Paragraph columns also use O
\begin{tabular}{Ol O{p{4cm}}}
  \hline
  Label & Description text here \\
  \hline
\end{tabular}

\end{document}
```

--------------------------------

### Matrix Spacing with [math] Option

Source: https://context7.com/josselinnoirel/cellspace/llms.txt

Load cellspace with the `[math]` option to automatically improve spacing in amsmath matrix environments. Set spacing limits using \setlength.

```latex
\documentclass{article}
\usepackage[math]{cellspace}

\setlength{\cellspacetoplimit}{2pt}
\setlength{\cellspacebottomlimit}{2pt}

\begin{document}

% Matrix with automatic cellspace correction
\[
\begin{pmatrix}
  +\frac{1}{2} & +\frac{1}{3} \\
  -\frac{1}{3} & +\frac{1}{2}
\end{pmatrix}
\]

% Also works with other matrix types
\[
\begin{bmatrix}
  \dfrac{a}{b} & \dfrac{c}{d} \\
  \dfrac{e}{f} & \dfrac{g}{h}
\end{bmatrix}
\quad
\begin{vmatrix}
  \dfrac{1}{2} & 0 \\
  0 & \dfrac{1}{3}
\end{vmatrix}
\]

\end{document}
```

--------------------------------

### Load Cellspace Package

Source: https://context7.com/josselinnoirel/cellspace/llms.txt

Include this in your LaTeX document preamble to load the cellspace package. Use the '[math]' option for matrix support and '[column=O]' to customize the column modifier name.

```latex
% Basic usage
\usepackage{cellspace}

% With math support for matrices
\usepackage[math]{cellspace}

% With custom column modifier name (instead of S)
\usepackage[column=O]{cellspace}
```

--------------------------------

### Cellspace with Tabularx Package

Source: https://context7.com/josselinnoirel/cellspace/llms.txt

To use cellspace with tabularx, register the 'X' column type as a paragraph column using \\addparagraphcolumntypes. Load tabularx after cellspace.

```latex
\documentclass{article}
\usepackage{cellspace}
\usepackage{tabularx}
\usepackage{amsmath}

\setlength{\cellspacetoplimit}{2pt}
\setlength{\cellspacebottomlimit}{2pt}

% Register X as a paragraph column type for cellspace
\addparagraphcolumntypes{X}

\begin{document}

\begin{tabularx}{\linewidth}{l SX}
  \hline
  A       & B B B B B B B B \\
  A A     & B B B B B B B B B B B B B B B B \\
  A A A A & $\dfrac{1}{2}$ B B B B B B B B
            B B B B B B B B $\dfrac{1}{2}$ \\
  \hline
\end{tabularx}

\end{document}
```

--------------------------------

### Set Cellspace Spacing Limits

Source: https://context7.com/josselinnoirel/cellspace/llms.txt

Configure the minimum spacing above and below cell content with horizontal rules using \\setlength. Default values are 1pt.

```latex
\documentclass{article}
\usepackage{cellspace}

% Set minimum spacing to 2pt above and below cell content
\setlength{\cellspacetoplimit}{2pt}
\setlength{\cellspacebottomlimit}{2pt}

\begin{document}
% Tables will now have at least 2pt spacing when content
% would otherwise touch horizontal rules
\end{document}
```

--------------------------------

### Register Custom Paragraph Column Types

Source: https://context7.com/josselinnoirel/cellspace/llms.txt

Register custom paragraph-type column specifiers for cellspace. Must be called in the document preamble.

```latex
\documentclass{article}
\usepackage{cellspace}
\usepackage{tabularx}

% Register X column from tabularx as paragraph type
\addparagraphcolumntypes{X}

% Register multiple custom column types at once
\addparagraphcolumntypes{YZ}

\begin{document}
% Now SX, SY, SZ will work correctly as paragraph columns
\end{document}
```

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