Hannan Sadar wrote: [...]
I have another problem. I would like my paragraph to start with a few
spaces inside and not that after a section, subsection or else the
beginning of the text would be straight at the beginning.
Isn't that default behaviour? If it isn't: Select style->document from the menu, and under separation, select "indent" instead of "skip". Then you get paragraphs where the first line is indented, except for paragraphs that follow a heading. (I.e. an indented line is the separation between two paragraphs.)
The other alternative, skip, makes some vertical space between paragraphs instead.
Helge Hafting