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fzinspect, name, params [, header]
Returns info about the fz file with name name. The file
size is returned in params(0), the data type in
params(1), the number of dimensions in
params(2), and the dimensions in params(3)
through params(10). Optionally, the file header is
returned in header.
If the file is not an fz file, then params(0) is set to
-1 but no error is generated. If name is not a
string, then an error is generated.