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-rw-r--r--Documentation/config.txt3
1 files changed, 2 insertions, 1 deletions
diff --git a/Documentation/config.txt b/Documentation/config.txt
index 70b448b132..6f649c997c 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -316,7 +316,8 @@ terminals, this is usually not the same as setting to "white black".
Colors may also be given as numbers between 0 and 255; these use ANSI
256-color mode (but note that not all terminals may support this). If
your terminal supports it, you may also specify 24-bit RGB values as
-hex, like `#ff0ab3`.
+hex, like `#ff0ab3`, or 12-bit RGB values like `#f1b`, which is
+equivalent to the 24-bit color `#ff11bb`.
+
The accepted attributes are `bold`, `dim`, `ul`, `blink`, `reverse`,
`italic`, and `strike` (for crossed-out or "strikethrough" letters).