| MA L | [Mask - line across image] |
| MA X | [Mask - image in X direction] |
| MA Y | [Mask - image in Y direction] |
| MA Z | [Mask - image in Z direction] |
| MM | [Mask Multiplication] |
| MM C | [Mask Multiplication - Continuous] |
.OUTPUT FILE: PIC002
[Enter the name of the output file.]
.OUTER & INNER RADII: 12.0, 0.0
[Enter the radii of the outer and inner mask circles, in
pixels. Pixels in areas outside the outer radius and inside
the inner radius are set to background. Enter zero inner
radius for no inner radius masking. Enter zero outer radius
for inner masking only.]
.(D)isk, (C)osine, (G)aussian edge, or (T)rue Gaussian: D/C/G/T
[Enter 'D' for sharp profile cutoff, (for 2D image only).
Enter 'C' or 'G' for piece-wise mask (no modification inside
the mask range, and cosine/Gaussian-shaped falloff from
this range outwards).
Enter 'T' for true Gaussian mask.]
.(A)V, (P)REC AV, (C)IRCUMF, OR (E)XTERNAL: P
[Enter 'A' if the background is to be the average of
the picture before masking.
Enter 'P' if the
background is to be the average after masking.
Enter 'E' if the background is to be specified EXTERNALLY.
Enter 'C' if you want the background to be determined
by averaging along the border of the mask].
[Enter the coordinates of the mask center. Note that you have to specify coordinates equal to NSAM/2+1, NROW/2+1,NSLICE/2+1 if you want the mask center to coincide with the nominal image center.]