Determines the type of width being specified, either relative where the sum
of all relative widths represents 100%; or absolute in number of chars.
Specifying relative widths instead of percent (%) does not require various
widths to add up to 100%. This is especially useful when the number of
relative widths may vary; recalculation of all the relative widths to add up
to 100% is obsolete as having relative widths, and not percent (%)..
Returns the enum constant of this type with the specified name.
The string must match exactly an identifier used to declare an
enum constant in this type. (Extraneous whitespace characters are
name - the name of the enum constant to be returned.