<\body> styles> The main styles are: <\explain|> This is the default style when you open a new document. The purpose of this style is to produce quick, informal documents. For this reason, the layout of paragraphs is very simple: instead of indenting the first lines of paragraphs, they are rather separated by white-space. <\explain|> This style may be used for writing short scientific articles, which are subdivided into sections. The numbering of environments like theorems, remarks, is relative to the entire document. If you use the package, then the numbers are prefixed by the section number. <\explain|> This style may be used for the creation of highly interactive laptop presentations. By default, we use a ``bluish'' theme similar to the beamer package, but other themes can be selected from the menus. <\explain|> This is the basic style for writing books. Books are assumed to be subdivided into chapters and numbers of environments are prefixed by the chapter number. In general, it is also comfortable to store each chapter in a separate file, so that they can be edited more efficiently. This issue is explained in more detail in the section about . <\explain|> Documents based on this style are typically printed on slides for presentations using an overhead projector. You may also want to use it when making presentation directly from your laptop, after selecting . Notice however, that slides correspond to real pages, whereas you rather should use ``switches'' in presentation mode. <\explain|> This is the privileged style for editing style files and packages. It enables ``source mode'', so that documents are rendered in a way which makes the structure fully apparent. For more details, we refer to the section on the . The style admits several variants, so as to make the layout correspond to the policy of specific journals. Currently, we have implemented analogues of the common styles , , , , , , , etc. Similarly, we are developing styles and which provide an alternative layout for articles and books. In addition to variants of the and styles, provides also a few other styles, which are based on the main styles, but which provide some additional markup. <\explain|> This style is based on the informal style, but it provides additional markup for writing letters. The additional macros are mainly used for headers and endings of letters. <\explain|> This style, which is again based on , provides some additional markup for headers of exams. It also customizes the rendering of exercises. <\explain|> This style is used for writing the documentation. It contains several tags for special types of content and extensions for linking, indexing, document traversal, . Some aspects of this style are still under heavy development. >