If, like me, you have not got the ability to read music, and are impatient to keep note of your own tunes, fear not! I believe I have something helpful.
The link below goes to a PDF I created of blank 6-hole images, in four configurations, so you can use open/half/closed hole notation to record your musings. (Probably having done this everyone will say “Who cant read music? What a silly idea!” Well, tough )
A few years back someone posted a font for MS Word that printed out whistle tab. To use it you have to cancel the automatic caps. If you didn’t, a lower octave note at the beginning of a line bacame an upper octave note.
I’ll bet someone can point us to that again.