Update cheatsheets

tldr/hx

@@ -5,8 +5,38 @@ source: https://github.com/tldr-pages/tldr.git
 ---
 # hx
 
-> This command is an alias of `helix`.
+> Helix, a post-modern text editor, provides several modes for different kinds of text manipulation.
+> Pressing `<i>` enters insert mode. `<Esc>` enters normal mode, which enables the use of Helix commands.
+> More information: <https://manned.org/man/debian-forky/hx>.
 
-- View documentation for the original command:
+- Open a file:
 
-`tldr helix`
+`hx {{path/to/file}}`
+
+- Open files and show them one next each other:
+
+`hx --vsplit {{path/to/file1 path/to/file2 ...}}`
+
+- Show the tutorial to learn Helix (or access it within Helix by pressing `<Esc>` and typing `<:>tutor<Enter>`):
+
+`hx --tutor`
+
+- Change the Helix theme:
+
+`<:>theme {{theme_name}}`
+
+- Save and Quit:
+
+`<:>wq<Enter>`
+
+- Force-quit without saving:
+
+`<:>q!<Enter>`
+
+- Undo the last operation:
+
+`<u>`
+
+- Search for a pattern in the file (press `<n>`/`<N>` to go to next/previous match):
+
+`</>{{search_pattern}}<Enter>`