diff --git a/Doc/RomWBW Architecture.pdf b/Doc/RomWBW Architecture.pdf
index ba9a5b43..dae486de 100644
Binary files a/Doc/RomWBW Architecture.pdf and b/Doc/RomWBW Architecture.pdf differ
diff --git a/Source/Doc/RomWBW Architecture.docx b/Source/Doc/RomWBW Architecture.docx
index 125e9f6c..8aacad68 100644
Binary files a/Source/Doc/RomWBW Architecture.docx and b/Source/Doc/RomWBW Architecture.docx differ
diff --git a/Source/HBIOS/API.txt b/Source/HBIOS/API.txt
index 781e9aef..3c6d5bf7 100644
--- a/Source/HBIOS/API.txt
+++ b/Source/HBIOS/API.txt
@@ -278,9 +278,8 @@ SEEK ($12):
   LBA: DE:HL
 
   Seek function establishes current sector for next I/O function for the specified
-  unit and invalidates the current sector for all other units.  A seek must precede
-  read/write/verify function calls.  Physical seek is typically deferred until
-  subsequent I/O operation.
+  unit.  A seek must precede read/write/verify function calls.  Physical seek is
+  typically deferred until subsequent I/O operation.
 
 READ ($13) / WRITE ($14) / VERIFY ($15):
   BC=Function/Unit                      A=Result