<\body> There are two main ways to distinguish between successive paragraphs: separate them by a small vertical space, or use an indentation for each new paragraph. The indentation can be explicitly controlled using the , , and tags. The and primitives apply to the current paragraph, while the and apply the next paragraph. <\explain> <|explain> Disable or enable indentation for the current paragraph. For instance, the code <\tm-fragment> <\inactive*> This is a long paragraph which demonstrates the disabling indentation using the primitive. This is a long paragraph which demonstrates enabling indentation using the primitive. typically produces <\tm-fragment> <\with|par-first|2fn> This is a long paragraph which demonstrates the disabling indentation using the primitive. This is a long paragraph which demonstrates enabling indentation using the primitive. <\explain> <|explain> Disable or enable indentation for the next paragraph. For instance, <\tm-fragment> <\inactive*> A first paragraph. A second paragraph. typically produces <\tm-fragment> <\with|par-first|2fn> A first paragraph. A second paragraph. Notice that and override and directives in the previous paragraph. Currently, the and tags are mainly used in order to control the indentation after section titles or environments like which usually correspond to paragraph units. In the future, when sectional tags will take the section bodies as arguments, and when the tag will be correctly implemented, the and will become deprecated.