##The Preamble In this example, the ‘’ file is the root document and is the tex file that will draw the whole document together. The first thing we need to choose is a document class. The article class isn’t designed for writing long documents like thesis’ so we’ll choose the report class, but we could also choose the book class. We can also change the font size by adding square brackets into the \documentclass command and specifying the size. We’ll choose 12pt. Let’s also prepare the document for images by loading the graphicx package. We’ll also need to tell LaTeX where to look for the images using the \graphicspath command, as we’re storing them in a separate folder. The start of our preamble now looks like this:
tank you very much.
ihave a qustion:
what means this error.
! Fatal fontspec error: „cannot-use-pdftex“!! The fontspec package requires either XeTeX or LuaTeX to function.!! You must change your typesetting engine to, ., „xelatex“ or „lualatex“! instead of plain „latex“ or „pdflatex“.!! See the fontspec documentation for further information.!! For immediate help type H .!……………………………………….. }