Looking for some tool in score view

[Deesnay]

In the score view, I remember in older versions using a tool that allowed reading the score by moving the mouse around.

There's this vertical line that indicates the current reading position. This tool I'm speaking of allowed to just move this line along the score, and every time the line would meet notes, you would hear the notes playing.

I can't seem to find this tool anymore. I'm sure it must be somewhere... ?

[scook]

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[Deesnay]

Thank you so much! ?? I should have asked sooner, because it's soooo useful, and I had no idea of the name.