diff --git a/wasm-port/docs/compatibility-validation.md b/wasm-port/docs/compatibility-validation.md
index 32e34cd..835a193 100644
--- a/wasm-port/docs/compatibility-validation.md
+++ b/wasm-port/docs/compatibility-validation.md
@@ -110,9 +110,10 @@ machine-session validation remain future work.
 The current fixture expectations validate standalone behavior against both the
 vendored LinuxCNC source path and an upstream `rs274` side-by-side baseline for
 parser/conversion, offsets, feed-control, comment/logging, numbered-parameter,
-spindle-orient, file-finish, and tool-reload fixtures. Fixtures that depend on
-standalone-only runtime adapters, HAL/INI/tool table setup, or richer machine
-session state still need dedicated native LinuxCNC baselines.
+spindle-orient, file-open reset, file-finish, tool-reload, and O-word
+subroutine fixtures. Fixtures that depend on standalone-only runtime adapters,
+HAL/INI/tool table setup, or richer machine session state still need dedicated
+native LinuxCNC baselines.
 
 The kinematics probes currently cover LinuxCNC identity/trivial kinematics,
 the switchable `5axiskins` XYZBCW bridge-mill model, and the TRT `xyzac`/`xyzbc`
diff --git a/wasm-port/docs/drift-report.md b/wasm-port/docs/drift-report.md
index fcf3921..a604c6d 100644
--- a/wasm-port/docs/drift-report.md
+++ b/wasm-port/docs/drift-report.md
@@ -68,8 +68,8 @@ semantic rewrites:
 - Fixture expectations are checked against the standalone vendored source
   path. The upstream `rs274` side-by-side baseline now covers simple motion,
   offsets, feed-control, comment/logging, numbered-parameter, spindle-orient,
-  file-finish, and tool-reload fixtures; adapter-heavy fixtures still need
-  dedicated native LinuxCNC baselines.
+  file-open reset, file-finish, tool-reload, and O-word subroutine fixtures;
+  adapter-heavy fixtures still need dedicated native LinuxCNC baselines.
 
 ## Current Drift Conclusion
 
diff --git a/wasm-port/docs/porting-steps-standalone.md b/wasm-port/docs/porting-steps-standalone.md
index f22e31e..45e1b4a 100644
--- a/wasm-port/docs/porting-steps-standalone.md
+++ b/wasm-port/docs/porting-steps-standalone.md
@@ -506,7 +506,8 @@ Current verified progress:
   side-by-side baseline against upstream `../linuxcnc/bin/rs274`. It normalizes
   native LinuxCNC canonical output for simple motion, offsets, feed-control,
   comment/logging, numbered-parameter, spindle-orient, file-finish, and
-  tool-reload fixtures, filters native output to the event classes each
+  tool-reload fixtures. It now also includes file-open reset and O-word
+  subroutine fixture coverage, filters native output to the event classes each
   standalone fixture explicitly expects, and compares the result without
   introducing a project-authored CNC semantics oracle.
 - `tests/fixtures/gcode_errors/g1_zero_feed.ngc` and
diff --git a/wasm-port/tools/verify_native_linuxcnc_fixture_baseline.sh b/wasm-port/tools/verify_native_linuxcnc_fixture_baseline.sh
index 58c10eb..63e5bae 100755
--- a/wasm-port/tools/verify_native_linuxcnc_fixture_baseline.sh
+++ b/wasm-port/tools/verify_native_linuxcnc_fixture_baseline.sh
@@ -12,11 +12,13 @@ FIXTURES=(
   coordinate_offsets
   cutter_comp_motion
   feed_control_modes
+  file_open_reset
   g53_machine_coordinates
   length_units
   plane_selection
   modal_incremental
   numbered_params
+  oword_subroutine
   percent_file_finish
   position_params
   spindle_orient
@@ -37,10 +39,15 @@ normalize_standalone_events() {
       return sprintf("%.12g", value + 0)
     }
 
-    /^canon_event=/ {
+    /^canon_event=/ || /^(STRAIGHT_(TRAVERSE|FEED)|SET_FEED_RATE) / {
       line = $0
       sub(/^canon_event=/, "", line)
 
+      if (line == "ON_RESET") {
+        print line
+        next
+      }
+
       if (line ~ /^COMMENT: /) {
         sub(/^COMMENT: /, "", line)
         print "COMMENT|" line
@@ -228,6 +235,9 @@ normalize_upstream_rs274_output() {
       sub(/^[[:space:]]*[0-9]+[[:space:]]+N\.\.\.\.\.[[:space:]]+/, "", line)
 
       if (line == "ON_RESET()") {
+        if (!seen_reset) {
+          print "ON_RESET"
+        }
         seen_reset = 1
         next
       }