Update cheatsheets

tldr/dos/loadfix

@@ -0,0 +1,21 @@
+---
+syntax: markdown
+tags: [tldr, dos]
+source: https://github.com/tldr-pages/tldr.git
+---
+# LOADFIX
+
+> Reduce available conventional memory for old programs (default: 64KB).
+> More information: <https://www.dosbox.com/wiki/LOADFIX>.
+
+- Start a program with 64KB allocated memory:
+
+`LOADFIX {{program}}`
+
+- Load with custom KB reduction (1-1024):
+
+`LOADFIX -{{32}} {{program}}`
+
+- Free all previously allocated memory:
+
+`LOADFIX -f`