Vertical Extension axis added

diff --git a/Lib/axisregistry/data/y_vertical_extension.textproto b/Lib/axisregistry/data/y_vertical_extension.textproto
new file mode 100644 (file)
index 0000000..9947858
--- /dev/null
+++ b/Lib/axisregistry/data/y_vertical_extension.textproto
@@ -0,0 +1,16 @@
+# YEXT based on https://github.com/TypeTogether/Playwrite
+tag: "YEXT"
+display_name: "Vertical Extension"
+min_value: 0
+default_value: 0
+max_value: 100
+precision: 0
+fallback {
+  name: "Default"
+  value: 0
+}
+fallback_only: false
+description: "The axis extends glyphs in the Y dimension, such as the
+  Cap Height, Ascender and Descender lengths. This is a relative axis,
+  starting at 0% and going to the typeface's individual maximum
+  extent at 100%."