Graphics, Figures & Tables ⇒ auto-size table width to make use of all space available

[localghost]

That's something to work with. For better hyphenation I added the ragged2e package.

Code: Select all

\documentclass[12pt]{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[font=small,labelfont=bf,tableposition=top]{caption}
\usepackage{array,booktabs,tabularx}
\usepackage{ragged2e}

\newcolumntype{C}{>{\Centering}X}
\newcolumntype{L}{>{\RaggedRight}X}
\newcolumntype{R}{>{\RaggedLeft}X}

\begin{document}
  \begin{table}[!ht]
    \caption{Comparison of \LaTeX-based or \LaTeX-supporting Equation Editors}\label{editor-comparison}
    \small
    \centering
    \begin{tabularx}{\linewidth}{*4{C}}\toprule
      Editor (Type) & Edited as & Previewed as & Inserted as \\ \midrule[1pt]
      LyX (Standalone) & WYSIWYG inline or button-facilitated mark-up & WYSIWYG inline & WYSIWYG inline \\\bottomrule
    \end{tabularx}
  \end{table}
\end{document}

For details about the other involved packages please refer to the according manuals.

[ptrcao]

Excellent work. Thank you localghost; it appears to have done the trick. I'll have to read up on those packages as I've never used them before. At least I know now about defining new columns.

[ptrcao]

Quick follow up: why did you use both "h" and "t" at the same time for the table positioning?

[localghost]

To restrict float placement to a single parameter is not good. You should at least give two of them. Note that the default setting for float placement is »htp«, determined by the so called float placement specifier (fps). There are several additional conditions which are overridden by the exclamation mark. I answered this similar in another topic [1]. If you have access to the mentioned book it's worth to study the relevant parts.

[1] View topic: Caption and PSTricks