CHECKS

THE BOX'S MAIN HELP:

This function generates a checkered pattern.

FQs (input):

This must be a float.  The default is 4.
This control the number of checks in the S direction.

FQt (input):

This must be a float.  The default is 4.
This control the number of checks in the T direction.

S (input):

This must be a float.  The default is s.

T (input):

This must be a float.  The default is t.

OUT (output):

This function generates a checkered pattern.