diff --git a/README.md b/README.md
index 9a74430..ab223c6 100755
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@ The project started in June 2014 and the brief was to have a [minimum viable pro
 
 There is a Telugu glyph set (Work Sans-Telugu.glyphs) that comes from [Ramabhadra](http://teluguvijayam.org/fonts.html) by Silicon Andhra. Glyphs marked red in the file are those that have been manually cleaned up, the rest are automatically cleaned up with FontForge from Ramabhadra. The Latin glyphs in Work Sans-Telugu.glyphs are out of date.
 
-*Note: There are no UFOs as UFOs exported from Glyphs App will currently not generate in Robofont and so on due to using '[Bracket trick](http://www.glyphsapp.com/tutorials/alternating-glyph-shapes)' and '[Brace trick](http://www.glyphsapp.com/tutorials/additional-masters-for-individual-glyphs-the-brace-trick)' to solve interpolation bumps. Glyphs marked orange are bracket layers and glyphs marked yellow are using brace layers.*
+*Note: There are no UFOs as UFOs exported from Glyphs App will currently not generate in Robofont and so on due to using Glyphs 2 features '[Bracket trick](http://www.glyphsapp.com/tutorials/alternating-glyph-shapes)' and '[Brace trick](http://www.glyphsapp.com/tutorials/additional-masters-for-individual-glyphs-the-brace-trick)' to solve interpolation bumps. Glyphs marked orange are bracket layers and glyphs marked yellow are using brace layers.*
 
 Refer to [BUILD.txt](/sources/BUILD.txt) for documentation on my process for hinting and generating webfonts.
 
diff --git a/sources/BUILD.txt b/sources/BUILD.txt
index 9d39241..9771970 100755
--- a/sources/BUILD.txt
+++ b/sources/BUILD.txt
@@ -1,10 +1,16 @@
 Introduction
 ------------
-I use Glyphs App to work on Work Sans. As stated in README.md I am not offering UFOs since the UFOs generated from Glyphs App will not interpolate properly due to using Glyphs App only features. If there is demand, in the future I may upload a compatible UFO set for interpolation.
+I use Glyphs App to work on Work Sans. As stated in README.md I am not offering UFOs since the UFOs generated from Glyphs 2 will not interpolate properly due to using Glyphs 2 only features. If there is demand, in the future I may upload a compatible UFO set for interpolation.
 
 Generating Fonts
 ----------------
-There are three sets of instances in Glyphs app, two that are named with font weights, the third named using its stem weights. The first set (10 weights from Hairline to Black) are for generating OTFs and follow Microsoft's recommendations for setting vertical metrics[1]. The second set are for generating TTFs for webfonts and follows Google Font's webfont recommendations[2]. The third were for testing.
+* * *
+
+The fonts must be generated from Glyphs 2, not Glyphs 1 as it is using features available only in Glyphs 2 to correct interpolation bumps. 
+
+* * *
+
+There are three sets of instances in the .glyphs file, two that are named with font weights, the third named using its stem weights. The first set (10 weights from Hairline to Black) are for generating OTFs and follow Microsoft's recommendations for setting vertical metrics[1]. The second set are for generating TTFs for webfonts and follows Google Font's webfont recommendations[2]. The third were for testing.
 
 The OTFs generated with Glyphs App (Remove Overlap, Autohint) will be usable immediately in desktop applications.