diff --git a/docs/documentation/architecture.md.in b/docs/documentation/architecture.md.in
index 48e78cf29..b4126fc6a 100644
--- a/docs/documentation/architecture.md.in
+++ b/docs/documentation/architecture.md.in
@@ -111,7 +111,7 @@ To add a new source term or physics model:
 1. **Create a module** in `src/simulation/` (e.g., `m_my_model.fpp`)
 2. **Add initialization/finalization** subroutines called from `m_start_up`
 3. **Add RHS contributions** called from the dimensional loop in `m_rhs:s_compute_rhs`
-4. **Add parameters** to `m_global_parameters` and input validation to `m_checker`
+4. **Add parameters** to `toolchain/mfc/params/definitions.py` (Fortran declarations and namelist bindings are generated from it) and input validation to `m_checker`
 5. **Add a module-level brief** (enforced by the linter in `lint_docs.py`)
 6. **Add the module to `docs/module_categories.json`** so it appears in this page
 
diff --git a/docs/documentation/getting-started.md b/docs/documentation/getting-started.md
index f402b6612..4fc3cfea9 100644
--- a/docs/documentation/getting-started.md
+++ b/docs/documentation/getting-started.md
@@ -227,13 +227,13 @@ For more options, see @ref visualization "Flow Visualization" or run `./mfc.sh v
 
 ### Parameter Lookup
 
-MFC has over 3,000 case parameters. Use the `params` command to search and explore them:
+MFC has over 4,000 case parameters. Use the `params` command to search and explore them:
 
 ```shell
 ./mfc.sh params dt          # Search for parameters matching "dt"
 ./mfc.sh params -d dt       # Show parameter with description
 ./mfc.sh params patch       # Find all patch-related parameters
-./mfc.sh params --family    # List all parameter families
+./mfc.sh params --families  # List all parameter families
 ```
 
 ### Creating a New Case
diff --git a/docs/documentation/gpuParallelization.md b/docs/documentation/gpuParallelization.md
index 0b8c6ef7f..2f1c76970 100644
--- a/docs/documentation/gpuParallelization.md
+++ b/docs/documentation/gpuParallelization.md
@@ -49,7 +49,7 @@ Note: Ordering is not guaranteed or stable, so use key-value pairing when using
 In order to parallelize a loop, simply place two macro calls on either end of the loop:
 
 ```C
-$:$GPU_PARALLEL_LOOP(...)
+$:GPU_PARALLEL_LOOP(...)
    {code}
 $:END_GPU_PARALLEL_LOOP()
 ```
diff --git a/toolchain/mfc/cli/commands.py b/toolchain/mfc/cli/commands.py
index 11077e273..f2bb186cc 100644
--- a/toolchain/mfc/cli/commands.py
+++ b/toolchain/mfc/cli/commands.py
@@ -1350,7 +1350,7 @@
 PARAMS_COMMAND = Command(
     name="params",
     help="Search and explore MFC case parameters.",
-    description="Search, list, and get information about MFC's ~3,300 case parameters.",
+    description="Search, list, and get information about MFC's case parameters.",
     positionals=[
         Positional(
             name="query",
diff --git a/toolchain/mfc/params/__init__.py b/toolchain/mfc/params/__init__.py
index 39c7e6ffe..a7b342769 100644
--- a/toolchain/mfc/params/__init__.py
+++ b/toolchain/mfc/params/__init__.py
@@ -1,7 +1,7 @@
 """
 MFC Parameter Schema Package (Minimal).
 
-Single source of truth for MFC's ~3,300 case parameters.
+Single source of truth for MFC's case parameters.
 
 Import Order
 ------------
@@ -10,7 +10,7 @@
 2. Schema classes (ParamDef, ParamType) for type definitions
 3. definitions module is imported LAST to populate and freeze REGISTRY
 
-The definitions import is a side-effect import that registers all ~3,300
+The definitions import is a side-effect import that registers all
 parameters with REGISTRY and then freezes it. This must happen at package
 import time so that any code importing from this package gets a fully
 populated, immutable registry.
diff --git a/toolchain/mfc/params/definitions.py b/toolchain/mfc/params/definitions.py
index 159dd9aae..30ad469c7 100644
--- a/toolchain/mfc/params/definitions.py
+++ b/toolchain/mfc/params/definitions.py
@@ -1,7 +1,7 @@
 """
 MFC Parameter Definitions (Compact).
 
-Single file containing all ~3,300 parameter definitions using loops.
+Single file containing all parameter definitions using loops.
 """
 
 import re
@@ -1216,7 +1216,7 @@ def _init_registry():
 # When adding a new parameter:
 #   1. Add to definitions.py (type, constraints, etc.) — you are here
 #   2. Add the namelist root variable to NAMELIST_VARS with its target set
-#   3. Re-run cmake to regenerate the .fpp files (cmake reconfigure)
+#   3. Rebuild; the .fpp files are regenerated at build time (cmake/ParamsCodegen.cmake)
 
 NAMELIST_VARS: dict[str, set[str]] = {}
 
diff --git a/toolchain/mfc/params/generators/fortran_gen.py b/toolchain/mfc/params/generators/fortran_gen.py
index 605c97a9f..adcc04d70 100644
--- a/toolchain/mfc/params/generators/fortran_gen.py
+++ b/toolchain/mfc/params/generators/fortran_gen.py
@@ -11,7 +11,7 @@
 TARGETS = [("pre", "pre_process"), ("sim", "simulation"), ("post", "post_process")]
 TARGET_FROM_DIR = {full: short for short, full in TARGETS}
 
-_HEADER = "! AUTO-GENERATED - do not edit directly. Regenerate: cmake reconfigure\n!\n"
+_HEADER = "! AUTO-GENERATED - do not edit directly. Regenerated at build time (cmake/ParamsCodegen.cmake)\n!\n"
 _MAX_LINE = 130
 _FIRST_PREFIX = "namelist /user_inputs/ "
 _CONT_PREFIX = "    & "
diff --git a/toolchain/mfc/params_cmd.py b/toolchain/mfc/params_cmd.py
index e40fdfc87..6e84a42e8 100644
--- a/toolchain/mfc/params_cmd.py
+++ b/toolchain/mfc/params_cmd.py
@@ -1,7 +1,7 @@
 """
 MFC Parameter Search and Discovery Command.
 
-Provides CLI access to search and explore MFC's ~3,300 case parameters.
+Provides CLI access to search and explore MFC's case parameters.
 """
 
 import re