'''info tclversion'''

Returns the value of the global variable [tcl_version]; see the [tclvars] manual entry for more information.
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[LES]: [info tclversion] is what newbies use until they discover [info patchLevel]. :-P
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See also:

   * [info]
   * [package require] Tcl x.y - makes sure you have at least the version given
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[rdt] Can someone please explain the differences between: a) $tcl_version and b) [[info tclversion]] ? [RS]: One is a global variable (which you could also change), the other is a "sugared" accessor.
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[Category Command] - [Tcl syntax help]