diff --git a/docs/building.md b/docs/building.md
index 3b902795..2ab39662 100644
--- a/docs/building.md
+++ b/docs/building.md
@@ -918,9 +918,11 @@ A change to how nx2navi.ini and the environment are read (`runtime/cfg.c` `cfg_l
 `cfg_bool`, `check_value`) passes `python tests\cfg_parse_check.py`, which builds `cfg.c` with stand-ins for what it
 links with and loads scratch files: a comment after a value of a setting with a set of values is cut and logged once
 with its line, free text, a value in double quotes and the environment keep theirs; switches written as words read as
-0 or 1 through every reader; values outside their sets are logged with their line, at most 16 lines and a count; a
-full settings table logs one line at load and one for the menu. The launcher's reader (`launcher/gameini.py`) has the
-same comment lines in `tests\launcher_test.py` `PlayerIniTest`. No game files.
+0 or 1 through every reader, the low-end mode's switch (`lowend_of`, read apart from `cfg_get`) included; values
+outside their sets are logged with their line, at most 16 lines and a count; a full settings table logs one line at
+load and one for the menu. The launcher's reader (`launcher/gameini.py`) has the same comment lines in
+`tests\launcher_test.py` `PlayerIniTest`, and `tools/make_game.py`'s own reads of `shader_carry` and `low_end_gpu`
+(`shader_carry`, `guest_opt_ini`) theirs in `MakeGameTest`. No game files.
 
 The lifter (`recomp/`) and the CPU headers (`runtime/cpu.h`, `runtime/simd.h`) are checked against Unicorn. Every lifter
 change passes these, all run with `.venv`:
diff --git a/nx2navi.ini.example b/nx2navi.ini.example
index 35fe2891..9697070a 100644
--- a/nx2navi.ini.example
+++ b/nx2navi.ini.example
@@ -1,9 +1,11 @@
 # nx2navi.ini: settings for nx2navi.exe. Copy this file to nx2navi.ini next to nx2navi.exe and remove the '#' of a line to change it.
 # Each line shows the default; on a Steam Deck the device profile ([display]) changes a few of them. A NX2NAVI_*
 # environment variable of the same name (NX2NAVI_FPS_LIMIT for fps_limit) overrides the file. Keys are case-insensitive;
-# '#' and ';' start a comment; [sections] only group lines. After a number or one of a setting's words, a space or tab
-# then '#' or ';' starts a comment too ("fps_limit = 144 # my monitor" is 144); a path, a name or a size keeps its whole
-# text. A setting of 0 or 1 also takes off, false and no for 0 and on, true and yes for 1.
+# '#' and ';' start a comment; [sections] only group lines. After the value of a setting with a list of choices or a
+# range, a space or tab then '#' or ';' starts a comment too ("fps_limit = 144 # my monitor" is 144); a path, a name, a
+# size, a keyboard key and the settings that take any number (gpu_index, compute_keep, tex_released_max, floor_probe,
+# floor_scan) keep their whole text. A setting whose only values are 0 and 1 also takes off, false and no for 0 and on,
+# true and yes for 1; a setting with more choices than 0 and 1 takes only the choices its lines here list.
 # Only the keys in this file are settings. A line with any other key does nothing: the game's log names it at the
 # start ("no setting of this version") and the settings menu (F1) shows it in its bottom row.
 # Updates and rebuilds of the game never rewrite nx2navi.ini; the settings menu changes only the lines of the settings