diff --git a/README.md b/README.md
index bacd6f1..f312676 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 Qunifont is a [qunified](https://typotheque.genderfluid.space/fr/quni#quni) version of the [Unifont](https://unifoundry.com/unifont/index.html)
 
-## Drawing new Qunifont glyphs (in pads)
+## Drawing new Qunifont glyphs in a pad
 
 Download, extract and rename the last Unifont tar.gz file (https://unifoundry.com/pub/unifont/?C=M;O=D) to get access to the Unifont utilities scripts
 
@@ -10,13 +10,13 @@ Download, extract and rename the last Unifont tar.gz file (https://unifoundry.co
     tar -xvf unifont.tar.gz
     mv unifont-16.0.01 unifont
 
-Change the GLYPH_MAX_WIDTH variable from hex2otf.c to 64 and compile it with `gcc unifont/src/hex2otf.c -o hex2otf`
+TODO: Change metadata in `hex2otf.c`
 
-    #define GLYPH_MAX_WIDTH 64	///< Maximum glyph width, in pixels.
+    see unifont/src/hex2otf
 
-TODO: change metadata
+Change the GLYPH_MAX_WIDTH variable in `hex2otf.c` to 64 and compile it with `gcc unifont/src/hex2otf.c -o unifont/src/hex2otf`
 
-    see unifont/src/hex2otf
+    #define GLYPH_MAX_WIDTH 64	///< Maximum glyph width, in pixels.
 
 Draw glyphs in a pad following this format (hexadecimal identifier):
 
@@ -58,7 +58,7 @@ TODO: add OpenType features
 
     see https://gitlab.com/bye-bye-binary/typotheque/-/raw/master/features-samples/features_exemple_long.fea
 
-## Other useful commands
+## Other useful commands etc.
 
 Convert uniascii to unihex
 
@@ -86,3 +86,11 @@ Print specific glyph in terminal from hexcode
 Download .fea from BBB
 
     wget https://gitlab.com/bye-bye-binary/typotheque/-/raw/master/features-samples/features_exemple_long.fea
+
+Edit Fontforge Lookup table
+
+    Element > Font Info > Lookup
+
+Import .fea file in Fontforge
+
+    File > Import merge features
diff --git a/mergehex.sh b/mergehex.sh
index 20eaf00..029fae2 100755
--- a/mergehex.sh
+++ b/mergehex.sh
@@ -10,11 +10,15 @@ for i in `cat qunifont.hex`; do
 done; 
 
 # remove duplicate ids from unifont.hex 
-cp unifont/font/plane00/unifont-base.hex unifont.hex
+#cp unifont/font/plane00/unifont-base.hex unifont.hex
 for i in "${ids[@]}"; do 
     echo $i;
     sed -i "/^$i/d" unifont.hex
 done; 
 
+# TODO:
+# cut first n glyphs of unifont-hex to make it lighter
+
 # concat qunifont.hex to cleaned unifont.hex
-cat qunifont.hex >> unifont.hex && cp unifont.hex qunifont.hex
+cat unifont.hex > merge.hex
+cat qunifont.hex >> merge.hex