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switches command example

#!/usr/bin/tclsh

regexp -nocase -line -- {([A-Z]*.([A-Z]*))} "Tcl \nTutorial" a b 
puts "Full Match: $a"
puts "Sub Match1: $b"
regexp -nocase -start 4 -line -- {([A-Z]*.([A-Z]*))} "Tcl \nTutorial" a b  
puts "Full Match: $a"
puts "Sub Match1: $b"

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