Short version of this question... does any form operating in ShowWindow 1 -In Top-Level Form become modeless by default?

My program calls the mail form as a modeless form as a Top-Level form. Screen = Off With the requisite Read Events, the form calls other forms. I have designated several as Modal forms with the ShowWindow 1 - In Top-Level form. Can a form actually be Modal In Top-Level form? I have several instances of forms opened in sequence as Modal from a prior Modal form. Just recently I have one form that seems to be acting as a Modeless form, executing code that Selects an alias not consistent with its place in the stack. When I Set Step On, it executes in sequence, but without the Set Step On, it has Selected the wrong alias for its place in the code. Thanks. dg