Returns the specified number of characters beginning from the leftmost character of a string.
LEFT$
(string_expression,num_char)
string_expression is any string expression.
num_char is the number of characters to extract from the string. It must be in the range 0 through 32,767.
s$ = "TEST STRING"
FOR i = 1 TO LEN(s$)
PRINT LEFT$(s$, i)
NEXT i