Expands a small piece of the image, at the location of the
user's first mouse click so that it fills the image. The size of
the detail area can be specified.
The option is as follows:
size
valid values are in the range 32-256.
EXAMPLE
detail 32
detail
The first example expands a 32x32 region. When no argument is
given, the detail rectangle is 64x64 pixels.