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I'm using biblatex in my documents. I have a .bib file containing a list of bibliography entries (publications.bib). Here is the .tex file:
\documentclass[a4paper,12pt]{article}
\usepackage[style=numeric,subentry]{biblatex}
\addbibresource{publications.bib}
\usepackage[utf8]{inputenc}
\usepackage ...

I'm trying to align a tabular with a picture relative to top. It seems that the presence of an \hline at the top of the table changes alignment rules.
here is an example:
\documentclass[12pt,a4paper,sans]{article}
\usepackage[demo]{graphicx}

\begin{document}
\raisebox{-\totalheight ...

It seems that \hyphenation is not working when the word defined with the macro is next to a slash in the text. For example:
\documentclass[a4paper,12pt]{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[english]{babel}
\setlength{\parindent}{0pt}
\usepackage{hyphenat ...

I would like some portions of my document to have different paragraphs spacing. For that I put those portions into brackets (some people say groups) and add at the beginning of each portion \setlength{\parskip}{XXpt} . When paragraphs are ended with \par this technique works almost. It indeed adjust ...

I forgot that the \newcommand macro I was actually using was the starred one. The starred one won't allow the use of '\par' in its argument.

I have two commands in a .sty file as following:
\newcommand{\tabitem}[3][.25em]{%
\begin{tabular}{@{}p{2em}@{\hspace{.2em}}p{\textwidth}@{}}%
\ifthenelse{\equal{#2}{}}{}{\raggedleft\hintstyle{#2}} & {#3}%
\end{tabular}%
\par\addvspace{#1}}

\newcommand{\entrydefinition}[2]{\tabitem{}{\bfseries ...

I defined a new variable (newvar) as \def\@newvar{\MakeLowercase{\@originalvariable}} and used \@newvar to options of hyperref with \hypersetup. The result is the same and occurs with the same message.

I'm using hyperref package in a class file. To define its options such as "pdftitle" I'm using variables, but I would like to assign them lowercase only. The command \MakeLowercase does not work in such circumstances and returns an error such as:
! Undefined control sequence.
\MakeLowercase ...

Right, it works without these commands, thanks.

I'm using \makeatletter and \makeatother in a *.sty file for commands generated with newcommand.py, but depending the place at which it is put it can make the compilation failing with e.g. the following error:
! LaTeX Error: Missing \begin{document}.

See the LaTeX manual or LaTeX Companion for ...