# Tuple Option

The tuple method assigns tuples explicitly to the template variables when a template DES contains more than one variable. For example, if we wanted (i,j)=(1,a), (2,b) only, assigning the range on the previous page would give us two unwanted DES. In the tuple method, we simply specify the tuples that we want for our variables. For both the range and tuple method, an instantiation must assign a value to all template variables in a template.

For the tuple method, each member of the tuple can be a string containing numbers, letters (upper and lower case), “-“, and “_”. A valid set of tuples would be (i,j)=(1,a),(AS1,b-z).

The following window shows an example.

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