When you rest your mouse pointer over a variable name for >0.5sec a small info box should pop up, giving details on the variable. This is a very desirable feature, but it is not working correctly.
These pics are screenshots taken after the mouse pointer rested on the spot shown for several seconds:
Mouse pointer rests over dataFileSize - no pop-up!
Mouse pointer rests over line 61 var makingDataFile, a pop-up is shown, but it belongs to the variable dataFileSize in the above line 60.
Attempting to show the variable makingDataFile I placed the cursor in the line below the var of interest, but then nothing is shown.
It gets even more complex with 3 or more subsequent lines, but the pop-ups are never for the correct variable. For some variables you never get a pop-up.
For the above to work the cursor on the horizontal axis must be within the length of the variable above line of the cursor.