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to-upper

to-upper ket
set all characters to upper case

to-upper[i1, i2, ..., in] ket
change i'th characters to upper case

to-upper |fred>
    |FRED>

to-upper[1] |fred>
    |Fred>

to-upper[1,3,5] |abcdefg>
    |AbCdEfg>

to-lower

ket normal, ket compound