When you'll need to fill in parameters in the extended properties pane in service studio it would be nice to have the same shortcut options as in the expression editor.
As example I've used an input variable which needs to be filled with the NullIdentifier(). Would be nice to only drop NI + <ctr> <space> having placed NullIdentifier(). Now I must open the expression editor or type the full name.
See attached screenshot for the clearified example.