FontForge
========= 
  SFD [Spline Font Database] is the native filetype; it's an ASCII file.

  FontForge           https://sourceforge.net/error-404.html?project=fontforgebuilds  
  FontForge How-to    http://designwithfontforge.com/en-US/index.html  
  Transfonter.org     https://transfonter.org  
  UTF-8 Char Tables   http://www.utf8-chartable.de/unicode-utf8-table.pl  
  Unicode Chars List  https://en.wikipedia.org/wiki/List_of_Unicode_characters#Latin-1_Supplement  

Config
======
  - Set Bookmarked Folders @ \FontForge\share\fontforge\preferences
  
    `FCBookmarks:	R:/;C:/CACHE/Downloads/;C:/CACHE/Downloads/working/`
  
  - Python @ \FontForge\lib\python2.7
  
  - Other @ \FontForge\etc\fonts\fonts.conf

Create Bold from Regular Weight 
===============================

  Edit > Select > Select All
  Element > Style > Change Weight (try 10)
  
  NOT:
    Edit > Select > Select All
    Element > Expand Stroke > Main Stroke Width > (try ~10)


Remove Spurious glyphs 
======================

  - Manually select per mouse LEFT-CLICK; 
    SHIFT+ if more than one. Then ... 
  
      Encoding > "Detach & Remove Glyphs"
      Encoding > Compact  (toggle off/on)
    
  - Element > Font info > Lookups > Select the problem > Delete

Unicode Subset [Custom]
=======================
  >Select Unicode subrange:       Edit->Select->"Select by Script"  
  or (De)Select glyphs manually:  SHIFT+LEFT_CLICK  
  Invert Selection:              Edit->Select->"Invert Selection"  
  Remove those:                  Encoding->"Detach & Remove Glyphs"  

  >[ The last step takes a while. ]  

  >Then, ...  

  >Encoding > "Compact"  

Add Glyph 
=========

  - @ Same SFD file
  
    Select source glyph with mouse LEFT-CLICK
    RT-CLICK > Copy 
    
    Select target glyph with mouse LEFT-CLICK
    RT-CLICK > Paste
    
  - @ another SFD file [per EPS file]
  
    Select/Open source glyph with mouse LEFT-DBL-CLICK
    File > Export > press ENTER to save as autonamed [to $PWD]. 
    
    Select target glyph with mouse LEFT-CLICK
    File > Import [SVG, EPS, ...]
    
  - @ NEW (unnamed) glyph 
  
    - Encoding > Add Encoding Slots 
    - RT CLK > Glyph Info > Unicode Char > <type it in>
    - Click on glyph 
    - File > Import [SVG, ...]

    
    
MODIFY Glyph
============
  E.g., for an Old Style + slashed-zero variant ...
  
    1. Modify, e.g., the `zero.tosf` glyph to some kind of slashed-zero effect. 
    
      - 'slash' source is `U+00A1 INVERTED EXCLAMATION MARK`
      - mouse LEFT-DBL-CLK to open source glyph; arrow-select region; copy 
      - paste to 'Back' of (opened) target glyph `U+0030 DIGIT ZERO`
      - modify; transform/scale/rotate
      - cut/paste to 'Fore'
      
    2. Copy/Paste the modified `*.tosf` set to their respective normal glyphs.
    
    3. Generate the (ttf) font. 
    
  By this method, the modified tabular/slashed-zero variant of Old Style Figures is invoked regardless of CSS property `font-variant-numeric` and related browser/typeface quirks.   
    
Meta Data
=========

  REQUIREd and affects how the platforms/applications render the font.
  
    Multiple Fonts of a Family 
    --------------------------
      
      To install several fonts [sub-families] of same family [typeface] requires certain meta data
    
      Element > Font Info > ...
        
        PS Names
        
          Fontname         FAMILY-SUB
          Family Name      FAMILY 
          Name For Humans  FAMILY SUB

        TTF Names [info/check; builds from PS Names]
        
          Family
          Fullname 

      Version Number Format: 001.001