Bf Em
 displayMode
Ef 
    Requested display mode string.
 
The 
Bf Sy
 displayMode
Ef 
 parameter is case-sensitive, and
tokens are separated by ASCII TABs (\t) and SPACEs.
 - 
Bf Sy
 index
Ef 
 
Enables 
Bf Sy
 GLUT_INDEX.
Ef 
 
 - 
Bf Sy
 luminance
Ef 
 
Enables 
Bf Sy
 GLUT_LUMINANCE.
Ef 
 
Enables 
Bf Sy
 GLUT_STENCIL.
Ef 
 
 - 
Bf Sy
 red
Ef 
 
Number of red channel bits.
 - 
Bf Sy
 green
Ef 
 
Number of green channel bits.
 - 
Bf Sy
 blue
Ef 
 
Number of blue channel bits.
 - 
Bf Sy
 alpha
Ef 
 
Number of alpha channel bits.
Enables 
Bf Sy
 GLUT_ALPHA.
Ef 
 
 - 
Bf Sy
 rgb
Ef 
 
Number of 
Bf Sy
 RGB
Ef 
 channel bits, no aplha bits.
Enables 
Bf Sy
 GLUT_RGB.
Ef 
 
 - 
Bf Sy
 rgba
Ef 
 
Number of 
Bf Sy
 RGBA
Ef 
 channel bits.
Enables 
Bf Sy
 GLUT_RGBA.
Ef 
 
 - 
Bf Sy
 depth
Ef 
 
Number of depth buffer bits.
 - 
Bf Sy
 stencil
Ef 
 
Number of stencil buffer bits.
 - 
Bf Sy
 double
Ef 
 
Enables 
Bf Sy
 GLUT_DOUBLE.
Ef 
 
 - 
Bf Sy
 single
Ef 
 
Enables 
Bf Sy
 GLUT_SINGLE.
Ef 
 
 - 
Bf Sy
 stereo
Ef 
 
Enables 
Bf Sy
 GLUT_STERO.
Ef 
 
 - 
Bf Sy
 acca
Ef 
 
Number of 
Bf Sy
 RGBA
Ef 
 accumulation bits.
Enables 
Bf Sy
 GLUT_ACCUM.
Ef 
 
 - 
Bf Sy
 acc
Ef 
 
Number of 
Bf Sy
 RGB
Ef 
 accumulation bits.
Enables 
Bf Sy
 GLUT_ACCUM.
Ef 
 
 - 
Bf Sy
 samples
Ef 
 
Number of samples for GLX's 
Bf Sy
 SGIS_Multisample.
Ef 
 
Enables 
Bf Sy
 GLUT_MULTISAMPLE.
Ef 
 
 - 
Bf Sy
 buffer
Ef 
 
[TODO] Sets bits in index mode?
 - 
Bf Sy
 conformant
Ef 
 
[TODO] Conformant with what?
Enables 
Bf Sy
 GLUT_DEPTH.
Ef 
 
 - 
Bf Sy
 slow
Ef 
 
[TODO] Indicates if a frame-buffer is slow.
 - 
Bf Sy
 num
Ef 
 
[TODO] Appears to select a frame-buffer configuration
by number from an unspecified list.  Probably
very non-portable.
A special capability name indicating where the value represents the Nth frame buffer configuration matching the description string
 - 
Bf Sy
 win32pdf
Ef 
 
Win32 specific: Pixel Format Descriptor
 - 
Bf Sy
 win32pfd
Ef 
 
Win32 specific: Pixel Format Descriptor
 - 
Bf Sy
 xvisual
Ef 
 
X11 specific: X Visual
 - 
Bf Sy
 xstaticgray
Ef 
 
X11 specific: "staticgray" mode.
 - 
Bf Sy
 xgrayscale
Ef 
 
X11 specific: "grayscale" mode.
 - 
Bf Sy
 xstaticcolor
Ef 
 
X11 specific: "staticcolor" mode.
 - 
Bf Sy
 xpseudocolor
Ef 
 
X11 specific: "pseudocolor" mode.
 - 
Bf Sy
 xtruecolor
Ef 
 
X11 specific: "trueolor" mode.
 - 
Bf Sy
 xdirectcolor
Ef 
 
X11 specific: "directcolor" mode.
Not all features appear to be implemented. In particular, numeric parameters and comparator specifications are lacking. See GLUT 3.7 sources for example.
PyOpenGL <a href="http://pyopengl.sourceforge.net/documentation/manual/glutInitDisplayString.3GLUT.html"> glutInitDisplayString</a> documentation.