FocusMarker

FocusMarker is a World of Warcraft addon that helps you with marking a target that you set your focus to. It maintains a macro (default: FocusMarker) in your global macro space, that looks something like this: 

    /focus [@mouseover,exists,nodead][]
    /tm [@mouseover,exists,nodead][] <1>

Where the "<1>" changes depending on your configuration (default: Star/Yellow). It also announces to your party (not raid group) what your focus marker is on readycheck.

The addon responds to the chat command "/focusmarker" or "/fm".

Example commands:

/fm yellow
/fm options
/focusmarker skull
/focusmarker menu

For a full list of commands, see the readme file here.