Keys (in alphabetical order):
=============================
TAB:    Navigate to left/right window.
ENTER:  Toggle bit set/unset (if in left window)
        Edit glyph (if in right window)
SPACE:  As ENTER above
^O   :  Open a new file
^N   :  Create a new font from scratch
^S   :  Save your work
^D   :  Save with a new filename (aka Save As..)
^Q   :  Quit the editor
^H   :  Show help
^C   :  Copy a glyph
^X   :  Cut a glyph
^V   :  Paste a glyph
A    :  Show about dialog box
^B   :  Switch buffer mode (on/off)
C    :  Clear a glyph (i.e. remove all bits)
D    :  Invert a glyph
E    :  Export font unicode table
I    :  Import unicode table from another file
K    :  Show these keys without the extra jargon
M    :  Show font metrics window
P    :  Change codepage of a CP font
        If font is in BDF format, P shows properties (or metadata)
^R   :  Remove unicode table from font
S    :  Set a glyph (i.e. set all bits)
U    :  Show font unicode table
W    :  Export font glyphs
X    :  Zoom out
Z    :  Zoom in
1 to 4 (number keys):
        Change the active font in a CP font file
