List the string against a character ruler to help with length and character placement debugging
The string to print
xf.Str.StringDebugHelper "Hear ye, hear ye" prints in the debugging window: 0 10 20 30 40 50 60 70 80 90 123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789 Hear ye, hear ye