Space Center

The Space Center view is the place to adjust and set metrics in a UFO. 

Text Input Fields

The input text will be tried to match glyph names, unicode of glyph names. You can preset some input strings in the preferences.

 any text ("abc") tries to match glyph names ("a", "b", "c")
unicoded character (&é) tries to match the unicode values ("ampersand", "eacute")
/glyphName explicit name the glyphName
/? display the current active glyph
\n new line

Left and right input fields add control glyphs around the main input field.

Value input fields

Width, left, and right take a numeric value or they can be set to the corresponding value of a glyph.

 any number ("123") sets value to the number
equals followed by a glyphName (=a) sets the value to the value of the corresponding glyph
simple math like ‘=e+10-z*10′
or ‘-=10+a’
sets the value to the evaluated expression

Kern

Toggle display of kerning. Only the kerning defined in the UFO. Kerning defined in the feature

Display Options

Multi Line will display the glyphs with multiple lines 
Single Line will display the glyphs in a single line
Water Fall will display a water fall
xHeight Cut will cut off ascender and descenders
Inverse inverse colors 
Show Metrics show metrics of the selected glyph 
Left To Right display text from left to right 
Right To Left display text from right to left 
Fill fill the glyphs 
Stroke stroke the glyphs 
Line Space Add line space between the lines
Show Control Glyphs Hide the control glyphs in the input view of the Space Center