Sage days 100 bug report

--- title: Sage days 100 bug report description: report bug in SageMath, typos in worksheets, ... tags: SageMath, SageDays100 --- # Sage days 100: bug report If you encounter a bug in SageMath, a problem with a worksheet or something weird, write it here. Your bug might be solved by someone during the week (maybe by yourself!). If you are sure about a bug, you can also fill a [Trac ticket](https://trac.sagemath.org) and add the keyword days100. ## Template ### bug report template - Operating system (eg Mac OS, Linux, Windows, ...) - SageMath version (eg 8.8, 8.9.beta3, ...) - SageMath environement (eg Jupyter, console, ...) - (optional) package (eg admcycles, sage-train-track, ...) - Description of the bug - Minimal code snippet that reproduces the problem - (optional) link to a Trac ticket ### worksheet problem template - Full name of the worksheet - Operating system (eg Mac OS, Linux, Windows, ...) - SageMath version (eg 8.8, 8.9.beta3, ...) - Description of the problem ### general question ## List Within "The three Sage golden rules" change 'Enter' to 'Shift-Enter' within the sentence: "Second, to access the documentation add a question mark ? at the end and press Enter:"

Syntax	Example	Reference
# Header	Header	基本排版
- Unordered List	Unordered List
1. Ordered List	Ordered List
- [ ] Todo List	Todo List
> Blockquote	Blockquote
Bold font	Bold font
Italics font	Italics font
~~Strikethrough~~	~~Strikethrough~~
19^th^	19^th
H~2~O	H₂O
++Inserted text++	Inserted text
==Marked text==	Marked text
[link text](https:// "title")	Link
![image alt](https:// "title")	Image
`Code`	`Code`	在筆記中貼入程式碼
```javascript var i = 0; ```	`var i = 0;`
:smile:		Emoji list
{%youtube youtube_id %}	Externals
$L^aT_eX$	L^aT_eX
:::info This is a alert area. :::	This is a alert area.