diff --git a/termcol b/termcol
index 4b23f1c..3160a8c 100755
--- a/termcol
+++ b/termcol
@@ -25,7 +25,6 @@ printf '\e[37m[37m Light grey\e[0m       \e[47m[47m Light grey\e[0m\n'
 printf '\n'
 
 printf '\e[4;37m\e[1;37mExtra Attributes\e[0m\n'
-
 printf 'Extra attributes can be given by placing a numeric value (representing the attribute) followed by a '';'' after the ''['' character.\n'
 printf '\n'
 
@@ -45,3 +44,19 @@ printf '\e[1;34m[1;34m Light blue\e[0m     \e[1;44m[1;44m Light blue\e[0m\n'
 printf '\e[1;35m[1;35m Light purple\e[0m   \e[1;45m[1;45m Light purple\e[0m\n'
 printf '\e[1;36m[1;36m Light cyan\e[0m     \e[1;46m[1;46m Light cyan\e[0m\n'
 printf '\e[1;37m[1;37m White\e[0m          \e[1;47m[1;47m White\e[0m\n'
+printf '\n'
+
+printf '\e[4;37m\e[1;37m4; (Underscore)\e[0m\n'
+printf '\n'
+printf 'This attribute displays text with an underline.\n'
+printf 'If the underline is always displayed in the foreground color. See the table below for more detail.\n'
+printf '\n'
+printf '\e[4;37mForeground\e[0m            \e[4;37mBackground\e[0m\n'
+printf '\e[4;30m[4;30m Black\e[0m            \e[4;40m[4;40m Black\e[0m\n'
+printf '\e[4;31m[4;31m Red\e[0m              \e[4;41m[4;41m Red\e[0m\n'
+printf '\e[4;32m[4;32m Green\e[0m            \e[4;42m[4;42m Green\e[0m\n'
+printf '\e[4;33m[4;33m Brown\e[0m            \e[4;43m[4;43m Brown\e[0m\n'
+printf '\e[4;34m[4;34m Blue\e[0m             \e[4;44m[4;44m Blue\e[0m\n'
+printf '\e[4;35m[4;35m Purple\e[0m           \e[4;45m[4;45m Purple\e[0m\n'
+printf '\e[4;36m[4;36m Cyan\e[0m             \e[4;46m[4;46m Cyan\e[0m\n'
+printf '\e[4;37m[4;37m Light grey\e[0m       \e[4;47m[4;47m Light grey\e[0m\n'