New Tcl subcommands
Expanded syntax/new options
string compare ?-nocase? ?-length int? string1 string2
string first string1 string2 ?startIndex?
string index string end-integer
string last string1 string2 ?startIndex?
string match ?-nocase? pattern string
string tolower string ?first? ?last?
string totitle string ?first? ?last?
string toupper string ?first? ?last?