
important improvements
----------------------

try to reduce size of hints
  -> handling strong points separately
  -> `compress' data
  -> more subroutines to avoid flags

add features to the GUI
  -> direct control over `actions'
  -> preview similar to ftgrid

improve handling of GDI ClearType by snapping to the pixel grid (this is,
  integer coordinates of horizontal segments)

handle OT features
  -> use HarfBuzz?

control `gasp' table; Adam Twardoch suggest the following:

  1. Calculate "gaspstem", i.e. the most common thickness of horizontal
     stems (y direction distances) for lowercase Latin letters.
  2. If gaspstem <= 0.03 * upm, apply gasp symmetric smoothing across the
     entire range (rangeMaxPPEM 0xFFFF, value 15)
  3. Else, calculate gaspthreshold as follows:
       ceil(1.33 * upm / gaspstem) - 1
  4. Apply no symmetric smoothing up to the gaspthreshold ppem (rangeMaxPPEM
     gaspthreshold, value 7), and apply symmetric smoothing above.

  In addition, ttfautohint should provide a commandline parameter that
  allows the user to override the automatic logic.  If that parameter = 0,
  then gasp value 15 should be applied across the entire range.  If the
  parameter > 0, then up to that parameter value the gasp value 7 should be
  applied, and gasp value 15 should be applied above.

control activation threshold of blue zone widths

control the width of blue zones

handle normal and bold fonts differently; cf. Infinality patches;
  this should help avoid filling of bowls (like in `e') for bold shapes.

control the minimum stem width

try to `embolden' fonts at small sizes to avoid drop-outs; cf. Infinality
  patches

implement `x-height-snapping-exceptions'

improve `pre-hinting' by making the used PPEM value configurable

allow hinting of single glyphs, using a config file which holds the global
  settings

better handling of `incomplete' fonts (this is, fonts which lack the minimum
  set of glyphs necessary to determine the blue zones)


minor improvements
------------------

correctly set `lowestRecPPEM' field in `head'

control dropout mode

apply hinting in x direction also?
  -> warper: shifting with and without scaling
  -> `standard' autofit hinting

add a config and/or command file for batch handling

warn against overwrite of output file?

reduce output size of option -p:
  1. compare outline rendered at EM value with unhinted outline
  2. pre-hint only if 1. differs more than given threshold (default 0.5%?)


later enhancements
------------------

add CJK autohinting module
add Hebrew autohinting module

instead of emitting bytecode, write the hints as a VTT or FontLab script

Windows/Mac installer


various
-------

testing with Windows and Apple font checkers

man page for ttfautohint library

separate man pages for ttfautohint and ttfautohintGUI

add info about ttfautohint's calling parameters to output font

install library

add notice to font that it has been processed by ttfautohint


EOF
