键盘资源管理器命令

键盘资源管理器用于使用键盘命令与数学表达式交互。交互允许读者以数学上有意义的方式遍历一个表达式，检查子表达式并在它们认为合适的时候深入到细节中。

键盘资源管理器支持多种类型的输出：所浏览子表达式的语音和盲文输出、该子表达式的放大以及与导航同步的突出显示。

导航可以在mathjax表达式聚焦时启动，并在探索过程中随时退出。当导航重新启动时，应用程序将在用户在表达式中离开的位置继续。

密钥绑定概述

`Enter`	Activate explorer. Requires math expression to have the focus.
`Escape`	Leave exploration mode.

`Down`	Explore next lower level of the formula by moving down in the sub-expression tree. Exploration will start at the left-most sub-expression on the level.
`Up`	Move up the sub-expression tree.
`Right`	Navigate the expression horizontally by moving to the next sub-expression on the current level.
`Left`	Navigate the expression horizontally by moving to the previous sub-expression on the current level.

一个earcon被用来指示一个表达式的边界已经在任意一个方向上到达。

`Tab`	Repeat previous speech-text or announcement.
`Space`	Get positional information; i.e., the current level in the sub-expression tree as well as collapsibility/expandability of the current subexpression.
`Enter`	Collapse or expand expression under cursor, if possible. Speech-text is regenerated to match.
`Home`	Navigate directly to top-most level of expression.
`X`	Summarise the expression under cursor, without collapsing it.
`Z`	Give detailed description of expression under cursor, without expanding it.
`V`	Start new virtual cursor from the current position.
`P`	Go to last position or previous virtual cursor
`U`	Undo all virtual cursors; i.e.; go to position where first virtual cursor was started.
`>`	Switch rule sets between MathSpeak and ClearSpeak, if both are available for the current locale.
`<`	Cycle styles or preferences for the currently active rule sets.

`Shift`+ `Down`	Move one cell vertically down in the table.
`Shift`+ `Up`	Move one cell vertically up in the table.
`Shift`+ `Right`	Move one cell horizontally right in the table.
`Shift`+ `Left`	Move one cell horizontally left in the table.

`0-9`+`0-9`	Move directly to cell (n,m) if it exists. (0,0) is cell (10,10).

注解

根据特定浏览器/屏幕阅读器/操作系统组合（特别是chrome和ie）的实现质量，用户可能必须禁用屏幕阅读器读取模式（例如，nvda中的“浏览模式”，jaws中的“虚拟光标”），然后才能启动mathjax explorer应用程序。