T4A - can't find legend to explain the track/roads/gravel routes symbols

[mdkb]

Maybe I am missing something but I cannot find a legend to explain any of the roads in the online map or the Guide App.

sometimes they have 'sand' or wording next to them, but nowhere can I find an explanation for the various road depictions and yet there are many:

thick brown, dotted brown with no white, white with brown dashes, white with red dashes, red dashes without any white, solid white (without road name), thin white (possibly not even a road, not sure, maybe a river - solved found the river name!).

can someone enlighten me to where I can find this info or share what each one means.