On page 54 of the "B4X Basic Language," in section 5.3.3 Select Case, this line seems to be missing a parameterized value:
Should probably say something like, "Select Txt.CharAt(N)" and "The TestExpression is a character at position N."
(Or use an actual number.)
Should probably say something like, "Select Txt.CharAt(N)" and "The TestExpression is a character at position N."
(Or use an actual number.)