How to merge the contents of the table cell without using multirow and multicolumn?

Question

\documentclass{article}
\usepackage{graphicx}
\begin{document}
\begin{table}
\renewcommand{\arraystretch}{1.2}
\centering
\setlength\tabcolsep{0.5em}
\scalebox{0.84}
{
\begin{tabular}{|l|l|l|}
\hline
Items & Type & Description\\
\hline
Output & Integrated Application & ABC\\
\hline
& Process \& Element Definition & AVB\\
\hline
& Tasks & PWS\\
\hline
& S & X Queries\\
\hline
& Scripting Languages & Java Script or VB Script\\
\hline
& Message Start Events & Receive or reply events\\
\hline 
Software & GUI tools & IBP\\
\hline
People & Designers & IDP\\
\hline
& Developers & PER\\
\hline
Technique & AAD\\
\hline
& Integration & ERCFT\\
\hline
& Task & ETY\\
\hline
\end{tabular}
}
\caption{TYURGY}
\label{t1}
\end{table}
\end{document}

I have tried to merge the contents of table cell using multirow, but it is not giving the output as desired. I want all the cells (rows) of column 1 (Items) to be merged into a single (wrap) row for the value Output. The MWE is as follows. Any help is appreciated.

Answer 1

Here I do it with left-aligned \Longunderstacks.

\documentclass{article}
\usepackage{graphicx,stackengine}
\setstackEOL{/}
\setstackgap{L}{\normalbaselineskip}
\strutlongstacks{T}
\begin{document}
\begin{table}
\renewcommand{\arraystretch}{1.2}
\centering
\setlength\tabcolsep{0.5em}
\scalebox{0.84}
{
\begin{tabular}{|l|l|l|}
\hline
Items & Type & Description\\
\hline
Output & \Longunderstack[l]{Integrated Application/ Process \& Element Definition/
  Tasks/ S/ Scripting Languages / Message Start Events}
& \Longunderstack[l]{ABC/ AVB/ PWS/ X Queries/ Java Script or VB Script/ 
  Receive or reply events}\\
\hline
Software & GUI tools & IBP\\
\hline
People & \Longunderstack[l]{Designers/ Developers} 
& \Longunderstack[l]{IDP/PER}\\
\hline
Technique & \Longunderstack[l]{AAD /Integration/ Task}
& \Longunderstack[l]{/ERCFT/ ETY} \\
\hline
\end{tabular}
}
\caption{TYURGY}
\label{t1}
\end{table}
\end{document}

ADDENDUM (How not to emulate \cline inside of a stack)

The OP asked about this, and I said there are better ways, since the stack, being inserted inside the tabular environment, really has no way of knowing how wide the column is, or the placement of its contents relative to the tabular cell border.

But just to show how it is done, the lines marked %%%... in the code replace the entry "S", so that a properly sized \cline may be placed under it.

\documentclass{article}
\usepackage{graphicx,stackengine}
\setstackEOL{/}
\setstackgap{L}{\normalbaselineskip}
\strutlongstacks{T}
\begin{document}
\begin{table}
\renewcommand{\arraystretch}{1.2}
\centering
\setlength\tabcolsep{0.5em}
\scalebox{0.84}
{
\begin{tabular}{|l|l|l|}
\hline
Items & Type & Description\\
\hline
Output & \Longunderstack[l]{Integrated Application/ Process \& Element Definition/
  Tasks/ 
  \def\stackalignment{l}%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  \setbox0=\hbox{Process \& Element Definition}%%%%%%%%%
  \stackunder[2pt]{S}{\llap{\rule{\tabcolsep}{.3pt}}%%%%
  \rlap{\rule{\dimexpr\wd0+\tabcolsep}{.3pt}}}/ %%%%%%%%
  Scripting Languages / Message Start Events}
& \Longunderstack[l]{ABC/ AVB/ PWS/ X Queries/ Java Script or VB Script/ 
  Receive or reply events}\\
\hline
Software & GUI tools & IBP\\
\hline
People & \Longunderstack[l]{Designers/ Developers} 
& \Longunderstack[l]{IDP/PER}\\
\hline
Technique & \Longunderstack[l]{AAD /Integration/ Task}
& \Longunderstack[l]{/ERCFT/ ETY} \\
\hline
\end{tabular}
}
\caption{TYURGY}
\label{t1}
\end{table}
\end{document}

Answer 2

I have here added a solution without multirow, and edited the code with some more common practices in LaTeX, generally acknowledged as a more professional look, and easier to read.

This solution uses booktabs, and the advice contained in that documentation to never use vertical lines, and also some horizontal lines with different widths. The scaleboxshould rarely be used to scale a whole table, as it leads to very inconsistent font-sizes. You could very well use different table column seperation-lengths as you did in your code, but I removed it as well as the arraystrech-command, as I don't really see the need for it in this code. Feel free to add them in if you really want, but as I said, I don't think it really adds to the look or feel of it.

EDIT: As suggested by Mico, I added some distance between the sub-groups, do give them further distinction, using \addlinespace. Thanks Mico.

\documentclass{article}
\usepackage{graphicx}
\usepackage{booktabs}
\begin{document}
\begin{table}
\centering
{
\begin{tabular}{lll}
\toprule
Items & Type & Description\\
\midrule
Output & Integrated Application & ABC\\
& Process \& Element Definition & AVB\\
& Tasks & PWS\\
& S & X Queries\\
& Scripting Languages & Java Script or VB Script\\
& Message Start Events & Receive or reply events\\
\addlinespace Software & GUI tools & IBP\\
People & Designers & IDP\\
& Developers & PER\\
\addlinespace Technique & AAD&\\
& Integration & ERCFT\\
& Task & ETY\\
\bottomrule
\end{tabular}
}
\caption{TYURGY}
\label{t1}
\end{table}
\end{document}

Below is another solution, which I have modified less, and is more true to your original code and look.

You asked for a solution without multirow, but without giving a reason as to what was wrong with the output. In case there simply was a problem with the code, here is an attempt with multirow.

\documentclass{article}
\usepackage{graphicx}
\usepackage{multirow}
\begin{document}
\begin{table}
\renewcommand{\arraystretch}{1.2}
\centering
\setlength\tabcolsep{0.5em}
\scalebox{0.84}
{
\begin{tabular}{|l|l|l|}
\hline
Items & Type & Description\\
\hline
\multirow{6}{*}{Output} & Integrated Application & ABC\\
\cline{2-3}
& Process \& Element Definition & AVB\\
\cline{2-3}
& Tasks & PWS\\
\cline{2-3}
& S & X Queries\\
\cline{2-3}
& Scripting Languages & Java Script or VB Script\\
\cline{2-3}
& Message Start Events & Receive or reply events\\
\hline 
Software & GUI tools & IBP\\
\hline
\multirow{2}{*}{People} & Designers & IDP\\
\cline{2-3}
& Developers & PER\\
\hline
\multirow{3}{*}{Technique} & AAD&\\
\cline{2-3}
& Integration & ERCFT\\
\cline{2-3}
& Task & ETY\\
\hline
\end{tabular}
}
\caption{TYURGY}
\label{t1}
\end{table}
\end{document}