document setting $USER

diff --git a/sudo.pod b/sudo.pod
index 2ccfc28f36838da7823330f53cebd9dfb0b73bb3..0aa727d4b4d62a53fb93cf7ad41bf2c561528746 100644 (file)
--- a/sudo.pod
+++ b/sudo.pod
@@ -175,6 +175,8 @@ date.
 
  PATH                  Set to a sane value if SECURE_PATH is set
  SHELL                 Used to determine shell to run with -s option
+ USER                  Set to the target user (root unless the -u option
+                       is specified)
  HOME                  In -s mode, set to homedir of root (or runas user)
                        if built with the SHELL_SETS_HOME option
  SUDO_PROMPT           Replaces the default password prompt