beameroverlays
\documentclass{beamer}
\usetheme{Madrid}
\begin{frame}{Introduction}
\begin{itemize}
\item<1-> abc
\item<2-> def
\end{itemize}
\begin{definition}<3->
ghi
\end{definition}
<4->jkl
\end{frame}
\end{document}
I want the plain text "jkl" to appear last, after the two "items" and one "definition". But what I did here didn't work. How can I fix it?
To get that particular effect, do not use the uncover for blocks:
\documentclass{beamer}
\usepackage{lmodern}
\usetheme{CambridgeUS}
\setbeamercovered{transparent}
\begin{document}
\begin{frame}{myFrame}{subtitle}
\begin{columns}
\begin{column}{.4\textwidth}
\begin{enumerate}
\item<1->item 1
\item<2->item 2
\item<3->item 3
\end{enumerate}
\end{column}%
\begin{column}{.6\textwidth}
\begin{block}<1->{Block1}
Text in block 1.
\end{block}
\begin{block}<2->{Block2}
Text in block 2.
\end{block}
\begin{block}<3->{Block3}
Text in block 3.
\end{block}
\end{column}
\end{columns}
\end{frame}
\end{document}
The result:
No. There is no way to do that. At least, there is no way to do that with beamer or any TeX software I'm aware of. The pauses just are separate pages in the output PDF. When you display the slides, a pause corresponds to a change from one page of the PDF to the next. So, if you have n pauses on a slide, you need n+1 pages in the PDF. Remove the page breaks and you remove the pauses. These are not distinct things. That is just how the pauses are implemented in the PDF.
If you in fact want what Sigur described - that is, the first item on the first slide only, the second on the second slide only and so on - that is straightforward:
\documentclass{beamer}
\begin{document}
\begin{frame}{A Title}
\begin{itemize}[<+| alert@+>]
\item This item appears only on the first slide.
\item This item appears only on the second slide.
\end{itemize}
\end{frame}
\end{document}
This puts the first item only on the first slide and the second item only on the second slide. However, it does this by using two pages in the output PDF:
Best Answer
You have to provide some command to make the text 'variable'. Here, the obvious option is
\uncover:You could also consider
\only, but it would alter vertical spacing so is unlikely to be what you want.