Meaning of Ynaqdhm?

Question

I accidentally created a rails app that already exists (i.e. rails new existingapp)

The terminal says

Overwrite /Users/username/Desktop/existingapp/.gitignore? (enter "h" for help) [Ynaqdhm]

What does Ynaqdhm stand for? I guess they are the available options? (e.g. y: yes, n: no ?) I pressed a thinking it would mean abort, but the new app went ahead, so perhaps it meant all. Where can I find what this means

Answer 1

Y - yes, overwrite
n - no, do not overwrite
a - all, overwrite this and all others
q - quit, abort
d - diff, show the differences between the old and the new
h - help, show this help
m - merge, run merge tool