> <\body> implements the three main mechanisms for : <\enumerate> Traversal of the entire structure of the document. Traversal of tags that are similar to the innermost tag. Movements inside the innermost tag. Most keyboard shortcuts for structured cursor movements can be used in combination with thekey so as to simultaneously select text while moving around. The , , and keys are used for the structured traversal of the entire document. Inside plain text, and allow you to move in a word-by-word manner, whereas and correspond to paragraph-by-paragraph motion. In the presence of other markup, the and keys allow you to visit all accessible cursor positions in the document, except that we keep moving in a word-by-word manner inside plain text. The behaviour of the and keys is more context-dependent. Inside matrices, they typically allow you to move one row up or down. This type of cursor movement allows you to quickly visit all other tags in the document that are to the innermost tag. The and keys allow you move to the previous or next similar tags, whereas and directly jump to the first or last similar tags. For instance, if you are inside a section title, then you may move to the previous sectional title using . Subsection and chapter titles are in particular understood to be \Psimilar\Q to section titles. Notice that you may use to jump to the previous section title. It is also possible to quickly move inside the innermost tag without quitting it. The shortcuts , , and provide a way to move to the previous, next, first or last argument of the innermost tag. Furthermore, the shortcuts and may be used to exit the innermost tag on the left or on the right. This default behaviour may be overridden in special contexts. For instance, inside tables or trees, they rather correspond to cell-by-cell or node-by-node cursor movement. In addition, these cases associate vertical cursor movements to , , and. >