revise the properties tcl/tk code and make lots of comments
hitting enter doesn't work in the properties dialog
add log/power
add sensitivity (when there is a range), make it like a slider
in edit mode, I'd like to have a double arrow in the right edge to set the box width, maybe a corner bottom right diagonal arrow to also set font size.
option to suppress the preceding tilde character
add receive symbol, show and hide inlet/outlet when in/out of edit mode
calculating the width is not the best thing, it's a wild guess, but seems better than iemguis' nightmare