<\body> The package provides several macros which may be useful when writing style files. First of all, the following macros may be used for rendering purposes: <\explain> <|explain> Low level tags for flushing to the right in the definition of environments. One usually should use or instead. <\explain> <|explain> These tags are used to make the span over the entire paragraph width. The text is left-aligned in the case of and centered in the case of . Making a body span over the entire paragraph width does not change the rendering on paper, but it facilitates the editing on the document. Indeed, on the one hand side, the box which indicates that you are inside the environment will span over the entire paragraph width. On the other hand, when clicking sufficiently close to the text inside this box, it becomes easier to position your cursor at the start or at the end inside the environment. You may check this by clicking on one of the texts below: > environment.>> > environment.>> <\explain> <|explain> These tags are variants of and , which put some vertical white space and above and below the . <\explain> <|explain> These tags are used to make the span over the entire paragraph width and to put a horizontal rule above and/or below it. The widths of the rules are given by and and the separation between the rules by and . The standard width and separation (used by , and ) are and . The padded variants specify additional spaces and above and below the rules. As an example, right>> yields: right> Wide underlined environments are typically used for page headers. Wide environments which are both overlined and underlined are typically used for abstracts or floating figures and tables. <\explain> <|explain> These tags put the inside a frame box which spans over the whole paragraph. The user may specify a , horizontal and vertical separations and between the border and the text, and colors and for the border and the background. For instance, > yields <\explain> <|explain> These environments may be used in order to increase the current left and/or right indentation by the amounts and/or . The following macros may be used in order to set headers and footers: <\explain|> A macro for permanently changing the header. Notice that certain tags in the style file, like sectional tags, may override such manual changes. <\explain|> A macro for permanently changing the footer. Again, certain tags in the style file may override such manual changes. <\explain|> Remove all headers and footers from this page. <\explain|> Remove the header of this page and set the footer to the current page number (centered). This macro is often called for title pages or at the start of new chapters. Other macros provided by are: <\explain|> This macro should be used in order to ``localize'' some English text to the current language. For instance, >> yields >. <\explain|> This macro applies the macro to each of the entries in a (or the children of an arbitrary tag) and returns the result as a tuple. For instance, >>|>> yields >>|> (the quote only appears when rendering the result, not when performing further computations with it). <\initial> <\collection>