add into about org mode

_drafts/org-mode.md

@@ -5,4 +5,21 @@ date   : 2024-03-13 18:00
 tags   :
 ---
 
-## show examples of some code blocks and executing them in org mode
+I recently had to write some documentation for people who are not familiar with
+C++ but know other programming languages and understand the basics of working
+inside notebooks. I thought to myself that org mode could be a good tool for
+this, as it can compile the code and put the output right next to it in an HTML
+or PDF format.
+
+## What is Org Mode
+
+[Org mode][1] is a major mode for [GNU Emacs][2]. It is used for keeping notes,
+maintaining TODO lists, planning projects, and authoring documents with a fast
+and effective plain-text system. It is also an authoring system with unique
+support for literate programming and reproducible research. It is a simple
+markup language that can be exported to HTML, PDF, and other formats. It is a
+much more powerful version of markdown.
+
+[1]: https://orgmode.org/
+[2]: https://www.gnu.org/software/emacs/
+