stedy output
That's possible.
It's called a "cursor" or "pointer".
mouse pointer
POINTER
When the mouse pointer hovers over any chart object, the name of the selected object appears as a tooltip. This tooltip provides a quick way for users to identify the specific object they are interacting with on the chart.
Little squares at the edges and corners of a selected graphic on your screen. You can move a handle with your mouse pointer to re-size or reshape the graphic.
cursor
Ruler
The pointer.
Your mouse pointer on the screen can be used as a "block" to jump on! Your mouse pointer on the screen can be used as a "block" to jump on!
A Curser, Maybe .. ?
It is highlighted on the screen