README: v2: Provide &$VARIABLE

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/README b/README
index aa0424e39487c556574da733750a6a42fe734a44..e87cb8078238452cb4b70d283656ffbf7f6d5d4c 100644 (file)
--- a/README
+++ b/README
@@ -244,6 +244,9 @@ So pathname syntax is a subset of:
 &@             =>      &               general escaping mechanism
 &&@            =>      &&               @ after any number of & vanishes
 
+&$VARIABLE     $(sub/dir/VARIABLE)
+       VARIABLE is ASCII starting with a letter and matching \w+
+
 & thing thing... &
 &^ thing thing... &
 &~ thing thing... &