Commenting Formulas?

Is it possible to add comments to formulas? As my formulas get more and more complex, I'd like to have some descriptors so that I don't come back in six weeks and wonder what on earth I was thinking Slight smile It'd also be helpful to comment finicky bits of formulas as I'm testing. 

Example:

([Title],[Total Seat Unsold Count]) - ([Title],[Seat Hold Code],[Total Seat Unsold Count]) + ([Title],[Ticket Count])

// Capacity formula is GA Tickets Unsold - GA Tickets Held
// Match to custom report AMNH: Attendance Capacity Report