Update cheatsheets

tldr/dos/ren

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+---
+syntax: markdown
+tags: [tldr, dos]
+source: https://github.com/tldr-pages/tldr.git
+---
+# REN
+
+> Rename files (use for moving too).
+> More information: <https://www.dosbox.com/wiki/Commands#REN>.
+
+- Rename file:
+
+`REN {{path/to/file}} {{new_name}}`

tldr/dos/rescan

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+---
+syntax: markdown
+tags: [tldr, dos]
+source: https://github.com/tldr-pages/tldr.git
+---
+# RESCAN
+
+> Refresh mounted drives (like CTRL-F4).
+> More information: <https://www.dosbox.com/wiki/RESCAN>.
+
+- Refresh mounted drives:
+
+`RESCAN`

tldr/dos/set

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+---
+syntax: markdown
+tags: [tldr, dos]
+source: https://github.com/tldr-pages/tldr.git
+---
+# SET
+
+> Set/display environment variables.
+> More information: <https://www.dosbox.com/wiki/Commands#SET>.
+
+- Set variable:
+
+`SET {{VAR}}={{value}}`

tldr/dos/type

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+---
+syntax: markdown
+tags: [tldr, dos]
+source: https://github.com/tldr-pages/tldr.git
+---
+# TYPE
+
+> Display the contents of a text file.
+> More information: <https://www.dosbox.com/wiki/Commands#TYPE>.
+
+- Show file:
+
+`TYPE {{path/to/file.txt}}`

tldr/dos/ver

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+---
+syntax: markdown
+tags: [tldr, dos]
+source: https://github.com/tldr-pages/tldr.git
+---
+# VER
+
+> View/set reported DOS version.
+> More information: <https://www.dosbox.com/wiki/Commands#VER>.
+
+- Set version:
+
+`VER set {{major_version}} {{minor_version}}`