Alignment doesn't appear right: it "misses" to the right

Question

I want to align my text. I use these packages (Linux):

texlive texlive-xetex texlive-lang-greek

I use kile as editor. I can write English and Greek with no problem. But when it comes to alignment I have the following problem:

I use \begin{flushleft} (as I say in a previous question) and it aligns to the left, but to the right it has no alignment. Some words excel and it is ugly. After some reading, I realized that the alignment supposed to work automatically (am I right?). But to me it doesn't.

The setup is:

\documentclass[a4paper,12pt,oneside]{book} 

\usepackage{fontspec}
\usepackage{xunicode}
\usepackage{xltxtra}

\setmainfont{Times New Roman}

\usepackage[a4paper,left=2cm,top=2.5cm,right=2cm,bottom=2.5cm]{geometry}

\begin{document}
 \chapter {Κεφάλαιο 1}

 \textbf {\LARGE Εισαγωγή}

 \setcounter{page}{1}

 \section {Ιστορία των επεξεργαστών γραφικών}

 \noindent      Μια μονάδα επεξεργασίας γραφικών ....
 \noindent    Στο διάστημα 1999-2000 ,...

Answer 1

You're not telling LaTeX that your main language is Greek, so it's not able to properly hyphenate words. Load the Polyglossia package and announce what languages you're using.

\documentclass[a4paper,12pt,oneside]{book} 

\usepackage{fontspec}

\setmainfont{Times New Roman}
\usepackage{polyglossia}
\setmainlanguage{greek}
\setotherlanguage{english}

\usepackage[a4paper,left=2cm,top=2.5cm,right=2cm,bottom=2.5cm]{geometry}

\begin{document}
\chapter{Εισαγωγή}

\section {Ιστορία των επεξεργαστών γραφικών}

Μια μονάδα επεξεργασίας γραφικών ....

Στο διάστημα 1999-2000 ,...

\foreignlanguage{english}{Some words in English}

\end{document}

You can also, for short English phrases, define a personal command:

\newcommand{\EN}[1]{\foreignlanguage{english}{#1}}

so that the phrase before can be input as \EN{Some words in English}.

If you don't want an indent at the beginning of paragraphs, then add

\setlength{\parindent}{0pt}

before \begin{document}, but I strongly discourage you to do so. The indent is meant to help in reading your document.

Answer 2

with respect to your previous question i think you misunderstand the meaning of flushleft. The default of LaTeX without any alignment-command is fully align.

For example:

begin{flushleft}
A BB CCC DD
F GGG HHH
III
{end}

gives output like:

A BB CCC DD
F GGG HHH
III

whereas

\noindent A BB CCC DD
F GGG HHH
III

gives output like:

A BB CCC DD
F  GGG  HHH
III

and

begin{flushright}
A BB CCC DD
F GGG HHH
III
{end}

gives output like:

A BB CCC DD
  F GGG HHH
        III

does this answer your question?