10.10.1. Supported HTML elements ¶
Tags that are not covered by Markdown can be written in HTML directly in the document.
Currently, the supported HTML elements are: The output is as follows: Markdown uses a lot of special symbols to express specific meanings, and if you need to display specific symbols, you need to use escape characters, and Markdown uses backslashes to escape special characters: The output is as follows: Markdown supports the following symbols preceded by a backslash to help insert ordinary symbols: Markdown Preview Enhanced Use KaTeX Or MathJax To render mathematical expressions. KaTeX has faster performance than MathJax, but it lacks many of the features that MathJax has. You can check KaTeX supported functions/symbols to see which symbols and functions KaTeX supports. The delimiter by default: The output is as follows:
In recent years, Geographic Information Systems (GIS) have undergone rapid development in both theoretical and practical dimensions. GIS has been widely applied for modeling and decision-making support across various fields such as urban management, regional planning, and environmental remediation, establishing geographic information as a vital component of the information era. The introduction of the “Digital Earth” concept has further accelerated the advancement of GIS, which serves as its technical foundation. Concurrently, scholars have been dedicated to theoretical research in areas like spatial cognition, spatial data uncertainty, and the formalization of spatial relationships. This reflects the dual nature of GIS as both an applied technology and an academic discipline, with the two aspects forming a mutually reinforcing cycle of progress.
Etc., such as: 使用 <kbd>Ctrlkbd>+<kbd>Altkbd>+<kbd>Delkbd> 重启电脑
10.10.2. Transfer of meaning ¶
**文本加粗**
\*\* 正常显示星号 \*\*
反斜线
` 反引号
* 星号
_ 下划线
{} 花括号
[] 方括号
() 小括号
# 井字号
+ 加号
- 减号
. 英文句点
! 感叹号
10.10.3. Formula ¶
$...$ Or \(...\) The mathematical expressions in the will be displayed on the line. $$...$$ Or \[...\] Or ` The mathematical expressions in ``math will be displayed within the block. 
$$
\begin{Bmatrix}
a & b \\
c & d
\end{Bmatrix}
$$
$$
\begin{CD}
A @>a>> B \\
@VbVV @AAcA \\
C @= D
\end{CD}
$$
Principles, Technologies, and Methods of Geographic Information Systems
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