how can I make a reference card like the Emacs reference card

[Gottfried <gottfried@posteo.de>]

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Hi,
I am learning Emacs, so please be patient with my basic questions.

I started to read the manual on a daily basis.

I would like to make some reference card like the Emacs reference card 
for Emacs keybindings.

I was looking on the web to find something and watched some videos, but 
I didn't find anything yet.
Does somebody know some websites or videos on you tube?
It's about formatting text, after or before I start to write text.

1. I guess I have first to set up the right environment.
e.g. very small letters (how to do that?)

2. which mode should I choose?

3. I guess I have to create a rectangle with several columns
and enlarge it to the whole buffer / sheet

4. Then I have to enter text

5. How to do the formatting of the text?
    e.g which minor mode?
    e.g headings in bigger letters on the first line

Is there a better way?

Kind regards

Gottfried


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