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lower, upper

Shift case

lower x     lower[x]
upper x     upper[x]

Where x is a character or symbol atom or vector, returns it with any bicameral characters in the lower/upper case.

q)lower"IBM"
"ibm"
q)lower`IBM
`ibm

q)upper"ibm"
"IBM"
q)upper`ibm`msft
`IBM`MSFT

Strings