Located in the object tool toolbar, this command
opens an Expanded display dialog when an object is dropped onto the button.
The dropped object needs to have a string representation of its value, for instance an object conform to STRING or conform to DEBUG_OUTPUT (see Debug Output)
This dialog show the object as a string, by default the displayed length is 50:

If the limits are over the current slice limits, the displayed string will end by "..." to show there is more.
If you click on the auto expand button
, the slice limits will be set to the lower and upper limits of the string value.
You can enable or disable the line wrapping by clicking onto
.