diff --git a/proto/protocol.xml b/proto/protocol.xml
index caf6f39..8c0b75d 100644
--- a/proto/protocol.xml
+++ b/proto/protocol.xml
@@ -1604,12 +1604,12 @@
       required to negotiate tool capabilities. Negotiation is performed by the
       server first sending ei_stylus.tool_capabilities prior to ei_device.done
       and then the client responding with ei_stylus.bind_tool_capabilities
-      prior to starting emulation for the first time.
+      prior to ei_device.ready.
 
       This interface may be used on both ei_device.device_type.virtual and
       ei_device.device_type.physical devices. As an interface with absolute
       motion, virtual devices must declare an arbitrary set of regions that
-      are be valid for motion events. For physical devices, the server must
+      are valid for motion events. For physical devices, the server must
       send an ei_device.dimensions that reflects the size of the active area
       of the stylus' digitizer. This size **must not** include any
       "[out-of-bounds][OOB]" margin that may exist (e.g. a digitizer with a
@@ -1872,7 +1872,7 @@
         location that exists outside of these locations. The EIS implementation
         may clamp out-of-range values and/or disconnect the client.
 
-        This request is required to be in the same frame as
+        This request must be in the same frame as
         ei_stylus.proximity_in. It may also be sent while the stylus is in or
         leaving proximity. It is a protocol violation to send this request at
         any other time.
@@ -2022,7 +2022,7 @@
       <description summary="stylus tool capabilities event">
         See the ei_stylus.bind_tool_capabilities request for more details.
 
-        The server sends this event after attaching the ei_stylus interface
+        The server sends this event after announcing the ei_stylus interface
         to an ei_device. This event describes the set of capabilities that
         the tool supports. For sender contexts, the client must confirm
         (and optionally narrow down) the capabilities with the