In Rhino3D there is a plugin called Bubble, this is a similar thing for CamBam.
Please note this is a Beta version for test purposes and comment ! it was but not now
1. Install the Plugin
2. Draw some lines, circles, text, etc.
3. Move the mouse around - nothing special happens
4.
Now keep the Shift' key pressed as you move around.
4. Now keep the letter ' i ' key pressed as you move around.
When the mouse cursor is over an entity, a box will appear with information about that entity.
something similar was requested here; (maybe others too ?)
http://www.cambam.co.uk/forum/index.php?topic=4781.msg36278#msg36278http://www.cambam.co.uk/forum/index.php?topic=1565.msg8676#msg8676Edit:
v2 attached
1. Fixed wrong start position
2. Added Spline information
Edit:
v3 attached
1. Faster fade in, feels more responsive
2. Display glitch fixed.
Edit:
v4 attached
1. Added translation code
Edit:
v5 attached
1. changes for translation
Edit: updated, I removed some diagnostic comments left active in error.
Edit:
v6 attached
1. Added a line showing XYZ of Polyline first point.
Edit:
v7 attached
1. The activation key has been changed from Shift to i
i.e. Press the i key as you move the mouse to make the popup appear.
Edit:
v8 attached
1. The first point of a Polyline is highlighted with a 'point'
2. If you put the polyline into Edit mode where all the control points are shown,
the popup still works and still highlights the first point.
Edit:
v9 attached
1. Added, 'Height', 'Width', 'Depth' parameters, these are derived from, ( Max extrema - Min extrema) therefore the level of usefulness will depend upon the type of entity being examined.
I also like to use integers for each version number because they are easier to read and we are not going to run out of them any time soon

Edit:
v10 attached
Spline shows "start" or first point
Edit:
v11 attached
Arc and Circle shows "start" or first point.
Please note that even if the circle is rotated, it still shows the start at 3 o'clock, this means it MUST be converted to a polyline if you wish to change the start position.