Open (edit) multiple files from within with the command mode

Question

How can you open multiple files when you're already browsing one?

If I do:

:e myFile

then myFile open in another buffer, but obviously:

:e myFile1 myFile2

open a new file named "myFile1 myFile2"...

It's easily possible to open from outside, be it in tabs or buffer, but from inside, still did not find...

Answer 1

:e and its relatives only accept one argument. See :help :args:

:argadd myFile1 myFile2

or:

:next myFile1 myFile2

You can use wildcards too:

:argadd *.rb