大家试试看是否可用了？
主要特性
Features:
Use Markdown in posts, personal messages and signatures
Can be used instead of or alongside text formatted with BBCode
Configuration to enable/disable the use of Markdown globally in the ACP
Configuration to enable/disable the use of Markdown per user in the UCP
Set per user group permissions to use Markdown
Set per forum permissions to use Markdown
Posting option to disable Markdown only in the current message
Help page to explain users how write messages in Markdown
Add indentation when pressing the tab key inside Markdown code blocks
Autogeneration of slugs/IDs for headings
Support for Image Alternate Text extension