I find it helps when reading code to be able to trigger the tooltip associated with a sub or any element that has a tooltip.
This can be done now by positioning the cursor after the open "(" and typing a single space, removing the space dismisses the tooltip. This is not bad, but is obviously a side-effect of the code editor rather than a design intent to assist in reading code.
How about bringing up an on-line help tooltip whenever the cursor is hovered over an element and dismissing it again when the cursor is moved off the element.
Don.