In forms, template, etc. you might want <noinclude>{Some Content}</noinclude> and of course the parser interprets noinclude, instead of transcluding/copying it.
The hack is to embed the no include block in another no include block like this: <no<noinclude></noinclude>include>{Some Content}</no<noinclude></noinclude>include>
The embedded no include distracts the parser but is functionally a NOP (no operation), leaving the outter no include intact.
