diff --git a/doc/implementing-extensions.md b/doc/implementing-extensions.md
index 3e33ed848..fa2241c8a 100644
--- a/doc/implementing-extensions.md
+++ b/doc/implementing-extensions.md
@@ -16,16 +16,18 @@ The general steps to implement an OpenXR extension in Monado are as follows.
   `clang-format -i src/xrt/state_trackers/oxr/oxr_extension_support.h`.
 * Add entry points for each new function in
   `src/xrt/state_trackers/oxr/oxr_api_negotiate.c`.
-* Monado internal implementations of "objects" (think XrSession or
-  XrHandTracker) go into `src/xrt/state_trackers/oxr/oxr_objects.h`.
-* Enums, defines and types go into `src/xrt/include/xrt/xrt_defines.h`. OpenXR
-  types are not used outside of the `oxr_api_*` files, instead equivalents with
-  the prefix `XRT_` are defined here.
-* Add Monado specific prototypes for the new functions in
-  `src/xrt/state_trackers/oxr/oxr_objects.h`. The Monado implementations of
-  OpenXR functions are prefixed with `oxr_`.
-* Implement the Monado specific functions in an appropriate source file
+* Add Monado internal prototypes for the new functions in
+  `src/xrt/state_trackers/oxr/oxr_api_funcs.h`. The Monado implementations of
+  OpenXR functions are prefixed with `oxr_` and use the `XRAPI_ATTR` and
+  `XRAPI_CALL` macros to satisfy calling conventions for all platforms.
+* Implement the `oxr_` Monado internal functions in an appropriate source file
   `src/state_trackers/oxr/oxr_api_*.c`. Trivial functions can be implemented
   right there along with the usual parameter checks. More complex functions that
   access more internal monado state should call functions implemented in the
-  relevant `oxr_*.c` file (without `_api_`).
+  relevant `oxr_*.c` file (without `_api_`). The definitions for those functions
+  go into `src/xrt/state_trackers/oxr/oxr_objects.h`.
+* Monado internal implementations of "objects" (think XrSession or
+  XrHandTracker) go into `src/xrt/state_trackers/oxr/oxr_objects.h`.
+* Enums, defines and types go into `src/xrt/include/xrt/xrt_defines.h`. OpenXR
+  types are typically not used outside of the `oxr_api_*` files, instead
+  equivalents with the prefix `XRT_` are defined here.