In another thread I created a chord link (F#°7) using my description above only to find that it didn't result in a valid diagram. Wondering why, I emailed Perry Roland, the developer of the Online Guitar Chord Dictionary, to see if he knew why my link had failed. In a very polite reply, he pointed out that I had used the sharp sign (#) as clear text in the link and that special character causes the parameter list to be invalidated. Perry pointed out that I needed to “escape” the special characters so they wouldn't be seen as control characters by the host operating system.
Any use of the sharp sign (#) in active links to Perry's dictionary should be replaced with a percent sign and the hexadecimal (base 16) representation of the sharp sign (%23).
Perry actually suggested that all special characters be escaped so the #, -, :, and / characters should be replaced by %23, %2d, %3a, and %2f, respectively and I know this is good advice but, in my own experience, only the sharp sign actually requires the alternate coding in this particular application.