diff --git a/.gitignore b/.gitignore
index 1fcd31fe..17d2c298 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 **/out/*
 **/a.exe
+ld-v-out.txt
 **/.parcel-cache/*
 examples/**/dist/*
 examples/**/*.o
diff --git a/notes-to-self.txt b/notes-to-self.txt
index 0ab9ea7e..48812cf9 100644
--- a/notes-to-self.txt
+++ b/notes-to-self.txt
@@ -62,23 +62,17 @@ awbasic - test all workspace builds
 should opnew.cpp be renamed newop.cpp?
 move png to doc folder
 in the npm package add source?
-remove ld-v-out.txt   
 substitution strings not support in mod.divLob(), eg console.log("The price is %.2f.", price);      
-add 'gotcha' section to debugging readme - static class functions, accidental re-entrant c
-/0 in C hangs with no exception or error
+/0 in hangs with no exception or error
 does sqrt() optimize to _builtin_sqrt()? doesn't appear too.   update twr_sqrt?
 (unreachable) is one way to term a web assembly function and throw an exception in JS. Are there others?
 what is -lwasm? clang --target=wasm32-unknown-unknown-wasm -o test.wasm test.c -lwasm
 balls performance analysis -- when lots of balls, "drawSeq" is 1/3 of time, moveAllBallsis 1/3, isCollisionNext 12%, moveSingleBall 17%
-the following prints strange 1e+2 for result of .1g
->>snprintf(buf, sizeof(buf), "BALLS: %d of %d  FPS: %.1g", m_numBalls, MAX_BALLS, m_fps);
-look at my implementation of precision for %g %f % e, they are handled differently but i treat the the same
 lots of this spec still to go: https://cplusplus.com/reference/cstdio/printf/
 add last new call (fillchar) to balls test c++ class
 add css string to d2d_setfillstyle() 
 add linear gradient support
 remove -v from balls makefile (after inspecting results)
-revert twr_dbg_printf newline change and add twr_debuglog
 investigate exceptions more: https://emscripten.org/docs/porting/exceptions.html
 index/async.html in examples have links to switched to bundled/unbundled versions, but the bundled version requires a file server, and they only really work with the azure version.  The local example builds are now a bit confusing.
 index.html/examples/unbundled switch is hard coded to web site so i cant test it locally
@@ -96,6 +90,9 @@ add source to module, also perhaps this is needed for above
 //twr_snprintf(b, sizeof(b), "%6.2d", -5);   // NOT IMPLEMENTED YET
 doc? -- if (twr_strcmp(b, "1.234568e+2")!=0) return 0;  // NOTE gcc printf %e gives 1.234568e+02
 and 	if (twr_strcmp(b, "1.00000e+7")!=0) return 0;    // GCC give 1e+07
+revert twr_dbg_printf newline change and add twr_debuglog
+add 'gotcha' section to debugging readme - static class functions, accidental re-entrant c
+remove ld-v-out.txt   
 
 NOTES:
 good wasm article: https://surma.dev/things/c-to-webassembly/index.html
diff --git a/source/unit-test/Makefile-pr b/source/unit-test/Makefile-pr
index e7df4212..b3b91d1b 100644
--- a/source/unit-test/Makefile-pr
+++ b/source/unit-test/Makefile-pr
@@ -1,18 +1,20 @@
 # This makefile builds pr.c, which I used to generate gcc printf output,  to determine how twr-crt should function
 # tested with mingw32-make 
 
-LIBS = -lm
-CC = gcc
-CFLAGS = -g -Wall -Wextra -fdiagnostics-color=always -std=c17 -pedantic
+# use mingw32-make -f Makefile-pr 
 
-.PHONY:  clean
+LIBS := -lm
+CC := gcc
+CFLAGS := -g -Wall -Wextra -fdiagnostics-color=always -std=c17 -pedantic
 
-out/pr.exe: out/pr.o
-	$(CC) out/pr.o -Wall $(LIBS) -o out/pr.exe
+default: out/pr.exe
 
-out/pr.o: pr.c 
+out/pr.o: pr.c
 	$(CC) pr.c $(CFLAGS) -c -o out/pr.o
 
+out/pr.exe: out/pr.o
+	$(CC) out/pr.o -Wall $(LIBS) -o out/pr.exe
+
 # Below only works on Windows
 clean:
 	rm -f out/pr.o