table,f,a,,,,"Table name"
column,s,a,,,,"Column name"
newunits,s,a,,,,"New column units"
oldunits,s,h," ",,,"Old column units"
abrevtab,f,h,"ttools$tunits/abrev.tab",,,"Table of unit abbreviations"
unittab,f,h,"ttools$tunits/units.tab",,,"Table of unit conversions"
verbose,b,h,no,,,"Print diagnostic messages?"
mode,s,h,al