All developers need to include comments. There is no reason I can think of for the Form Designer to remove manually added comments.;
; This code is automatically generated by the FormDesigner.
; Manual modification is possible to adjust existing commands, but anything else will be dropped when the code is compiled.
; Event procedures needs to be put in another source file.
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In an ideal world, it would retain the code layout too. Indentation is only space that can be ignored by the Form Designer but makes it far easier for developers to read the code.