> For the complete documentation index, see [llms.txt](https://docs.chamilo.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.chamilo.org/1.11.x/teacher-guide/communication__forums/reply_or_reply_to_this_topic.md).

# Reply or Reply to this topic

The main difference between those two options resides in the hierarchy of the different messages and their answers.

*Reply* creates new answers which will be deleted altogether when the initial message s removed, while *Reply to this thread* creates messages which will be kept, even if the starting message is removed.