x = "this*is1 a test"
y = ""
FOR i = 1 TO LEN(x)
	y = y + IIF( ISALPHA( SUBSTR(x, i, 1)), SUBSTR(x, i, 1), [ ])
endfor

>My users often copy and past text from other applications into an editbox in my application that has special characters that show up as a graphic box character. Is there an easy way to test and replace with a space for characters that are outside the basic a-z, A-Z, punctuation, etc.?