Some analytic functions have Boolean arguments with this syntax:
argument ({'true'|'t'|'yes'|'y'|'1'|'false'|'f'|'no'|'n'|'0'})
For such arguments:
- 'true', 't', 'yes', 'y', and 1 are equivalent.
- 'false', 'f', 'no', 'n', and 0 are equivalent.