#
DATABASE menu:
There are two submenus: VIEW ACTIVE DATABASE and VIEW DATABASE.

     VIEW ACTIVE DATABASE submenu.  If there is an OPEN IMAGE
(FILE menu) on the screen, and a particle has been BLOCK SELECTed
(IMAGE menu), then the VIEW ACTIVE DATABASE submenu displays the VALUEs
for all particles accepted up to this point, as follows:
particle area (AREA), sum of gray values in the particle
(GRAYSUM), sum of optical densities in the particle
(DENSESUM), average optical density (DENSEAVG),
standard deviation of optical density (DENSESTDV),
least standard error divider (DIVIDER),
average diameter of the particle (AVGDIAM),
greatest diameter (MAXDIAM), least diameter (MINDIAM),
elliptical eccentricity (ECCENT), center-of-gravity
x-axis (XCENTER) and y-axis (YCENTER), particle
contour (CONTOUR), fractal dimension (FRACTAL),
and perimeter (PERIMETER).
     VIEW DATABASE submenu.  If there is an existing DATABASE
file name ending in .DBS, then the VIEW DATABASE submenu displays
the VALUEs for all particles in that existing database
(see ANALYSIS/VALUES).
#