Proper Way to Use Sublime Text Minimap

You'll need to get those ASCII font first.

Emacs Minimap Package

there are 2 minimap packages in emacs i know of. minimap.el and sublimity.el. They are both in MELPA. 〔see Emacs: Install Package with ELPA/MELPA〕

ASCII Font, Are You Serious?

You can draw your own ASCII letters by using emacs picture-mode.

〔see Emacs: Edit Column Text, Rectangle〕

Or, you can use generate ascii font at: http://www.network-science.de/ascii/

examples:

   ###    ########  ####
  ## ##   ##     ##  ##
 ##   ##  ##     ##  ##
##     ## ########   ##
######### ##         ##
##     ## ##         ##
##     ## ##        ####

Font: starwars
     ___      .______    __
    /   \     |   _  \  |  |
   /  ^  \    |  |_)  | |  |
  /  /_\  \   |   ___/  |  |
 /  _____  \  |  |      |  |
/__/     \__\ | _|      |__|

Font: isometric3
      ___           ___
     /  /\         /  /\      ___
    /  /::\       /  /::\    /  /\
   /  /:/\:\     /  /:/\:\  /  /:/
  /  /:/~/::\   /  /:/~/:/ /__/::\
 /__/:/ /:/\:\ /__/:/ /:/  \__\/\:\__
 \  \:\/:/__\/ \  \:\/:/      \  \:\/\
  \  \::/       \  \::/        \__\::/
   \  \:\        \  \:\        /__/:/
    \  \:\        \  \:\       \__\/
     \__\/         \__\/

Font: larry3d

                 __
   __     _____ /\_\
 /'__`\  /\ '__`\/\ \
/\ \L\.\_\ \ \L\ \ \ \
\ \__/.\_\\ \ ,__/\ \_\
 \/__/\/_/ \ \ \/  \/_/
            \ \_\
             \/_/

Font: bulbhead
   __    ____  ____
  /__\  (  _ \(_  _)
 /(__)\  )___/ _)(_
(__)(__)(__)  (____)

Font: doom
             _
            (_)
  __ _ _ __  _
 / _` | '_ \| |
| (_| | |_) | |
 \__,_| .__/|_|
      | |
      |_|

Font: epic
 _______  _______ _________
(  ___  )(  ____ )\__   __/
| (   ) || (    )|   ) (
| (___) || (____)|   | |
|  ___  ||  _____)   | |
| (   ) || (         | |
| )   ( || )      ___) (___
|/     \||/       \_______/

Font: graffiti
              .__
_____  ______ |__|
\__  \ \____ \|  |
 / __ \|  |_≻ ≻  |
(____  /   __/|__|
     \/|__|

Font: puffy

               _
   _ _  _ _   (_)
 /'_` )( '_`\ | |
( (_| || (_) )| |
`\__,_)| ,__/'(_)
       | |
       (_)

then, set up abbrev mode or yasnippet template for them. Here's howto:

• Emacs: Setup Hundreds of Abbrevs
• Emacs: Using Templates with YASnippet

Really Serious?

but, seriously, i recommend not using any sort of physical layout for presentation. You can read about relevant opinions in the following. (Warning: rant rampant)

• Emacs: Form Feed ^L Problem
• Programing: Tab vs Space in Source Code
• Programing: the Harm of Hard-wrapping Lines
• Unix, RFC, Line Truncation
• Programing: Lisp: Automatic Code Formatting, Lint, Auto Indentation
• A Text Editor Feature: Extend Selection by Semantic Unit

thanks to [Rafał Babinicz https://plus.google.com/104054809690343822036/posts] for tip.