tried some key mappings but failed

[DanielAjoy]

I tried some key mappings but failed. I tried:

(goToStart) 'ctrl+a mapkey

and 

(home) 'ctrl+a mapkey

The reference says

At present, only the key names and sequences defined in the nimline library are supported.

But I couldn't figure out what sequences were available or how to use them

[h3rald]

Well... you were nearly there! Essentially you can bind a key sequence like ctrl+ or similar to any quotation, like this:

(quit) 'ctrl+q mapkey

...then pressing CTRL+q will execute quit and exit the min REPL.