I use raster equivalents of the Small Craft NOAA charts on my sailboat.
The chart data base display shows thw chart book number but does not
show Page A or B etc and I would like to add the appropriate page
letters so as to know which chart to select.
I seem to remember I asked this question some years (and many computers)
ago and someone suggested a Hex editor that did the job as long as the
number of characters on the title line was not changed. I downloaded
"GroovyHex" editor but cannot see how to use it for this purpose.
Dick