Usage:
  alice2 ...
  where ... indicates any combination of the below optional parameters.

  examples:
    alice2 -in wmap_ilc_3yr_v2_r6_sim.fits -nside 512 -ell 300 -xsz 800 -out test
    alice2 -in wmap_ilc_3yr_v2_r6_sim.fits -nside 512 -ell 300 -xsz 800 -out test_sos -sos
    alice2 -in wmap_ilc_3yr_v2_r6_sim.fits -nside 512 -ell 300 -xsz 500 -out test_orth -orth 1.0

  [-in <fits file>] fits file contains the Q and U polarization
  components in the second and third columns.

  [-temperature <fits file>] an optional fits file containing
  temperature data, if different temperature than that in the above
  file is desired

  [-out <string>] string used as a prefix for output files

  [-texture <fits file>] optional input background texture

  [-nside <int>] nside of the background texture generated

  [-ell <int>] ell value at which background texture has power

  [-xsz <int>] x size: width of output images

  [-flat] use a flat kernel for convolution, instead of a sinusoidal
  one.

  [-steps <int>] number of steps to use for each line of the convolution

  [-step_arcmin <float>] arcminutes for each step in the convoloution

  [-threshold]

  [-orth <float>] orthogonal projection.  <float> should be between 0.0 and 1.0;
  it determines the zoom.

  [-alpha <float>] first euler angle

  [-beta <float>] second euler angle

  [-gamma <float>] third euler angle

  [-col <int>] color table index

  [-bar] plot a color bar at the bottom of the graphic

  [-title <string>] title (in quotes) for the plot

  [-fitsout <fits file>] output fits file that contains a texture.  No
  graphic is plotted.

  [-texture2 <fits file>] a second texture, for interpolation

  [-frames <int>] number of frames used in interpolation

  [-sos] Science on a Sphere projection

  [-min <float>] minimum value for the temperature scale

  [-max <float>] maximum value for the temperature scale

  [-polmin <float>] minimum value for the polarization magnitude

  [-polmax <float>] maximum value for the polarization magnitude