[dbohdan] 2017-09-05: This is a tiny hack to accept command line arguments and display usage. You should probably use [cmdline] or [autoopts] instead.

======
> cat foo.tcl
proc [info script] {ip {port 22}} {
    # ...
}
[info script] {*}$argv
> ./foo.tcl
wrong # args: should be "./foo.tcl ip ?port?"
======

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