<\body> The different rendering styles for source trees are described in more detail in the about the global presentation of source trees. The corresponding environment variables are briefly described here. <\explain> <|explain> The principal rendering style for source trees as specified in . Possible values are , , and . <\explain> <|explain> How to render special tags like , , , , as specified in . Possible values are , , and . <\explain> <|explain> How compact should tags be rendered, as specified in . Possible values are , , , and . <\explain> <|explain> The rendering style of closing tags as specified in . Possible values are , , and .