[PATCH 08/14] leacy: layout detection confirmance

---
 content.tex | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/content.tex b/content.tex
index 9902756..2de0644 100644
--- a/content.tex
+++ b/content.tex
@@ -1328,16 +1328,17 @@ capability list.
 
 Therefore:
 
-Transitional devices should expose the Legacy Interface in I/O
+Transitional devices MUST expose the Legacy Interface in I/O
 space in BAR0.
 
-Transitional drivers should look for the Virtio PCI
+Transitional drivers MUST look for the Virtio PCI
 Capabilities on the capability list.
-If these are not present, driver should assume a legacy device.
+If these are not present, driver MUST assume a legacy device,
+and use it through the legacy interface.
 
-Non-transitional drivers should look for the Virtio PCI
+Non-transitional drivers MUST look for the Virtio PCI
 Capabilities on the capability list.
-If these are not present, driver should assume a legacy device,
+If these are not present, driver MUST assume a legacy device,
 and fail gracefully.
 
 Non-transitional devices, on a platform where a legacy driver for
-- 
MST