下方/上方 [⚠️ need proofread]
方程的部分上方或下方的定界符。
大括号和方括号还允许在它们自己的下方或上方添加可选的注释。 [⚠️]
函数
underline元素自始可用
A horizontal line under content.
展开示例
$ underline(1 + 2 + ... + 5) $

body
The content above the line.
overline元素自始可用
A horizontal line over content.
展开示例
$ overline(1 + 2 + ... + 5) $

body
The content below the line.
underbrace元素自始可用
A horizontal brace under content, with an optional annotation below.
展开示例
$ underbrace(0 + 1 + dots.c + n, n + 1 "numbers") $

body
The content above the brace.
annotation默认值:none
The optional content below the brace.
overbrace元素自始可用
A horizontal brace over content, with an optional annotation above.
展开示例
$ overbrace(0 + 1 + dots.c + n, n + 1 "numbers") $

body
The content below the brace.
annotation默认值:none
The optional content above the brace.
underbracket元素自始可用
A horizontal bracket under content, with an optional annotation below.
展开示例
$ underbracket(0 + 1 + dots.c + n, n + 1 "numbers") $

body
The content above the bracket.
annotation默认值:none
The optional content below the bracket.
overbracket元素自始可用
A horizontal bracket over content, with an optional annotation above.
展开示例
$ overbracket(0 + 1 + dots.c + n, n + 1 "numbers") $

body
The content below the bracket.
annotation默认值:none
The optional content above the bracket.
underparen元素自始可用
A horizontal parenthesis under content, with an optional annotation below.
展开示例
$ underparen(0 + 1 + dots.c + n, n + 1 "numbers") $

body
The content above the parenthesis.
annotation默认值:none
The optional content below the parenthesis.
overparen元素自始可用
A horizontal parenthesis over content, with an optional annotation above.
展开示例
$ overparen(0 + 1 + dots.c + n, n + 1 "numbers") $

body
The content below the parenthesis.
annotation默认值:none
The optional content above the parenthesis.
undershell元素自始可用
A horizontal tortoise shell bracket under content, with an optional annotation below.
展开示例
$ undershell(0 + 1 + dots.c + n, n + 1 "numbers") $

body
The content above the tortoise shell bracket.
annotation默认值:none
The optional content below the tortoise shell bracket.
overshell元素自始可用
A horizontal tortoise shell bracket over content, with an optional annotation above.
展开示例
$ overshell(0 + 1 + dots.c + n, n + 1 "numbers") $

body
The content below the tortoise shell bracket.
annotation默认值:none
The optional content above the tortoise shell bracket.