... COPY I MAGE : copies an image from one dataset to another. COPY T ABLE : copies a table from one dataset to another. ... PARSE : Parses a list of comma separated strings into an array of strings and a number of components. SORT : sorts a list of real numbers into ascending numerical order. READ M ODES : reads the CCD modes extension of a dataset. READ H IST : reads a tracking history dataset. ... REALSAME : tests whether two real numbers are the same to within a tolerance . ...