I need a command (and a package) that add empty space at the beginning of the page.
Something like vspace{} or vspace*{}
[Tex/LaTex] Add space at the beginning of the page
spacing
Related Solutions
If you never need the optional argument to \marginpar you can use \initmarginpar defined as
\newcommand{\initmarginpar}[1]{\leavevmode\marginpar{#1}\ignorespaces}
Otherwise always remember to protect the end of line with a comment character:
\marginpar{Margin note}%
Start of the paragraph...
I believe that \leavevmode (or even more \quitvmode) is much better than \hspace{0pt}.
Since you're trying to typeset code, perhaps the listings package will be helpful. You can adjust the left margin using xleftmargin.
\documentclass{article}
\usepackage[parfill]{parskip}
\usepackage{listings}
\begin{document}
There are several ways to code a mux. Here is an example below:
\begin{lstlisting}[xleftmargin=1em]
input wire [7:0] a;
input wire [7:0] b;
input wire [2:0] s;
output wire [7:0] fab;
assign fab = s[0] ? b : a;
\end{lstlisting}
This code infers an 8bit 2:1 mux.
\end{document}
Best Answer
A combination of
\vspaceand\vspace*can be used:At the begin of a new page, the first
\vspace{...}is automatically removed and the second\vspace*{...}stays. In the middle of the page, the spaces sum up to zero.