\begin{table}%t11
\caption{{\it Top}: keywords in main FITS header for {\tt -TAB} example,
{\it bottom}: table keywords and sample arrays for that example.}
\label{ta:widths}
%\centering
\par
\begin{tabular}{l}
\hline
\hline
\noalign{\smallskip}
\verb+123456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789 + \\
\noalign{\smallskip}
\hline
 \noalign{\smallskip}
\verb!NAXIS   =                    3 / 2-d celestial coord, 1-d multiple exposure! \\
\verb!NAXIS3  =                    4 / radio, infrared, optical, x-ray! \\
\verb!WCSAXES =                    4 / multiple exposures in bandpass and time! \\
\verb!WCSNAME = `Multi-wavelength, multi-epoch'! \\
\verb!CTYPE3  = `WAVE-TAB'           / spectral axis by table look-up! \\
\verb!CTYPE4  = `TIME-TAB'           / temporal axis by table look-up! \\
\verb!CNAME3  = `Bandpass'           ! \\
\verb!CNAME4  = `Observation Date'   ! \\
\verb!CUNIT3  = `m'                  / wavelengths in meters! \\
\verb!CUNIT4  = `a'                  / observation dates in years! \\
\verb!CRPIX3  =                  0.5 / spectral bin initial edge of initial pixel! \\
\verb!CRPIX4  =                    1 / temporal bins are at begin/end time! \\
\verb!CDELT3  =                    1 / spectral index array is one unit per bin! \\
\verb!CDELT4  =                    1 / temporal index array is one unit per bin! \\
\verb!CRVAL3  =                  0.5 / spectral reference is center of radio exposure! \\
\verb!CRVAL4  =                    0 / temporal reference is start of radio exposure! \\
\verb!PC3_3   =                    1 / 3rd pixel axis increments 3rd image coord axis! \\
\verb!PC3_4   =                    0 ! \\
\verb!PC4_3   =                    1 / 3rd pixel axis increments 4th image coord axis ! \\
\verb!PC4_4   =                    1 / 4th pixel axis is degenerate (1 point)! \\
\verb!PS3_0   = `WCS-table'! \\
\verb!PS3_1   = `WaveCoord'! \\
\verb!PS3_2   = `WaveIndex'! \\
\verb!PS4_0   = `WCS-table'! \\
\verb!PS4_1   = `TimeCoord'! \\
\verb!PS4_2   = `TimeIndex'! \\
\verb! ! \\
\hline
\verb! ! \\
\verb!EXTNAME = `WCS-table'! \\
\verb!EXTVER  =                    1 ! \\
\verb!EXTLEVEL=                    1 ! \\
\verb! ! \\
\verb!                        TUNIT2 = `m'                                    TUNIT4 = `a'! \\
\verb!TFORM1 = `8E'           TFORM2 = `8D'           TFORM3 = `8E'           TFORM4 = `8D'! \\
\verb!TTYPE1 = `WaveIndex'    TTYPE2 = `WaveCoord'    TTYPE3 = `TimeIndex'    TTYPE4 = `TimeCoord'! \\
\verb!--------------------    --------------------    --------------------    --------------------! \\
\verb! (0.5,                   (0.21106114,            (0.0,                   (1997.84512,! \\
\verb!   1.5,                    0.21076437,             1.0,                    1997.84631,! \\
\verb!    1.5,                    2.0E-6,                 1.0,                    1993.28451,! \\
\verb!     2.5,                    2.2E-6,                 2.0,                    1993.28456,! \\
\verb!      2.5,                    500.0E-9,               2.0,                    2001.59234,! \\
\verb!       3.5,                    650.0E-9,               3.0,                    2001.59239,! \\
\verb!        3.5,                    1.24E-9,                3.0,                    2002.18265,! \\
\verb!         4.5)                    2.48E-9)                4.0)                    2002.18301)! \\
\noalign{\smallskip}
\hline
\end{tabular}
\end{table}