[Xfce-i18n] Translating "Show Legend"

[scootergrisen]

Not sure how to translate the string "Show Legend" from:
https://github.com/xfce-mirror/xfce4-taskmanager/blob/master/src/settings-tool-button.c#L186

Can we have a screenshot?

Seems it shows something on the statusbar according to 
https://github.com/xfce-mirror/xfce4-taskmanager/commit/a18b8bd3c357af82fd68e1e11a046d7727b02c51

What other words can i be called?