True or False. Tcl has no separate Boolean type, like in C, the integers 0 (false) and 1 (true - in fact any nonzero integer) are used.

[NEM]: Although [expr] will also accept "true" and "false" (and "yes"/"no"..) as Boolean
values.

[1S]
In fact, there's no separate Integer type in [Tcl] as well -- everything
is a string.  A proper boolean value is either a proper integer, with,
like in [C], zero meaning false and non-zero meaning true, or one of the
following: '''yes''', '''no''', '''true''', '''false''', '''on''', or
'''off'''.

See [Boolean Logic] or [Integers as Boolean Functions].

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[[ [Category Glossary] ]]