Update cheatsheets

tldr/tdf

@@ -0,0 +1,25 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# tdf
+
+> A tui PDF viewer.
+> More information: <https://github.com/itsjunetime/tdf>.
+
+- Open a specific file:
+
+`tdf {{path/to/file}}.pdf`
+
+- Open in fullscreen mode:
+
+`tdf {{[-f|--fullscreen]}} {{path/to/file}}.pdf`
+
+- Set a custom white color:
+
+`tdf {{[-w|--white-color]}} {{ffffff}} {{path/to/file}}.pdf`
+
+- Set a custom black color:
+
+`tdf {{[-b|--black-color]}} "rgb({{0}}, {{0}}, {{0}})" {{path/to/file}}.pdf`