diff --git a/pages/dos/loadfix.md b/pages/dos/loadfix.md
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+# 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`
diff --git a/pages/dos/loadhigh.md b/pages/dos/loadhigh.md
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+# LOADHIGH
+
+> Load program into upper memory (requires `xms=true`, `umb=true`).
+> More information: <https://www.dosbox.com/wiki/Commands#LOADHIGH>.
+
+- Load program into upper memory:
+
+`LOADHIGH {{program}}`
diff --git a/pages/dos/md.md b/pages/dos/md.md
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+++ b/pages/dos/md.md
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+# MD
+
+> Make a directory.
+> More information: <https://www.dosbox.com/wiki/Commands#MD>.
+
+- Create directory:
+
+`MD {{path/to/directory}}`
diff --git a/pages/dos/mem.md b/pages/dos/mem.md
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+++ b/pages/dos/mem.md
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+# MEM
+
+> Display free memory info.
+> More information: <https://www.dosbox.com/wiki/Commands#MEM>.
+
+- Display free memory:
+
+`MEM`
diff --git a/pages/dos/mixer.md b/pages/dos/mixer.md
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+# MIXER
+
+> Display/set sound levels.
+> More information: <https://www.dosbox.com/wiki/MIXER>.
+
+- Display current volumes:
+
+`MIXER`
+
+- Set master volume (left:right percentages):
+
+`MIXER master {{80}}:{{80}}`
+
+- Set Sound Blaster volume in decibels:
+
+`MIXER sb d{{10}}:d{{10}}`
+
+- Set GUS left channel only:
+
+`MIXER gus {{50}}`
+
+- Set volumes without displaying result:
+
+`MIXER gus {{40}}:{{40}} /NOSHOW`
+
+- List available MIDI devices (Windows only):
+
+`MIXER /LISTMIDI`