diff --git a/system/ppc/Ep3-AllCards.3SE0.patch.s b/system/ppc/AllCards.3SE0.patch.s
similarity index 100%
rename from system/ppc/Ep3-AllCards.3SE0.patch.s
rename to system/ppc/AllCards.3SE0.patch.s
diff --git a/system/ppc/Ep3-Editors.3SE0.patch.s b/system/ppc/Editors.3SE0.patch.s
similarity index 100%
rename from system/ppc/Ep3-Editors.3SE0.patch.s
rename to system/ppc/Editors.3SE0.patch.s
diff --git a/system/ppc/Ep3-VIPCard.3SE0.patch.s b/system/ppc/VIPCard.3SE0.patch.s
similarity index 100%
rename from system/ppc/Ep3-VIPCard.3SE0.patch.s
rename to system/ppc/VIPCard.3SE0.patch.s
diff --git a/system/ppc/VersionDetect.s b/system/ppc/VersionDetect.s
index ed5e58ef..244d23a9 100644
--- a/system/ppc/VersionDetect.s
+++ b/system/ppc/VersionDetect.s
@@ -1,10 +1,14 @@
 # This function returns the game version, with values more specific than can be
-# detected by the sub_version field in various login commands.
+# detected by the sub_version field in the various login commands (e.g. 9D/9E).
 
-# The returned value has the format 03GGRRVV, where:
-#   G = game (Ox4F (O) = Episodes 1&2, 0x53 (S) = Episode 3)
-#   R = region (0x45 (E), 0x4A (J), 0x50 (P))
-#   V = minor version (0 = 1.00, 1 = 1.01, 2 = 1.02, etc.)
+# The returned value has the format SSGGRRVV, where:
+#   S = 33 (which represents PSO GC)
+#   G = game (4F (O) = Episodes 1&2, 53 (S) = Episode 3)
+#   R = region (45 (E), 4A (J), or 50 (P))
+#   V = minor version | 30 (30 = 1.00, 31 = 1.01, 32 = 1.02, etc.)
+# This results in a 4-character ASCII-printable version code which encodes all
+# of the above information. This value is called specific_version in the places
+# where it's used by the server.
 
 newserv_index_E3:
 
diff --git a/system/ppc/WriteMemory.s b/system/ppc/WriteMemory.s
index 763c3eee..54cea72f 100644
--- a/system/ppc/WriteMemory.s
+++ b/system/ppc/WriteMemory.s
@@ -12,16 +12,20 @@
 # with the .include directive; there is an example of this in the code below.
 
 # Patches are functions that are available to run upon client request. They can
-# be made available in the Patches menu or via the $patch command. In general,
-# patches should be named like PATCHNAME.VXLS.patch.s, where V, X, L, and S
+# be made available in the Patches menu or via the $patch command. If a label
+# named hide_from_patches_menu is present anywhere in the code, the patch is
+# only usable via the $patch command and does not appear in the Patches menu.
+# Patches should be named like PATCHNAME.VXLS.patch.s, where V, X, L, and S
 # denote which specific game version the patch is for. Specifically:
 #   V should be 3 for PSO GameCube
 #   X should be O for Episodes 1 & 2, and S for Episode 3
 #   L should be E, J, or P for USA, Japanese, or Europe
 #   S should be 0, 1, 2, etc. for the disc version (0 = v1.00, 1 = v1.01, etc.)
-# If a label named hide_from_patches_menu is present anywhere in the code, the
-# patch is only usable via the $patch command and does not appear in the Patches
-# menu.
+# (For the curious, these four-character version codes directly match the
+# values returned by the VersionDetect function - see VersionDetect.s.) For
+# example, the patch that gives the player a VIP card in Episode 3 USA is in
+# the file VIPCard.3SE0.patch.s. (If there were a Japanese version of that
+# patch, it would be in VIPCard.3SJ0.patch.s.)
 
 # For example, to use this function to write the bytes 38 00 00 05 to the
 # address 8010521C, send_function_call could be called like this: