SectionIn Custom

It's just an idea, but shouldn't it be possible to use a SectionIn to be executed when a custom section is selected. I tought of the following:

Section anysection

SectionIn 0    ;0 says that the Custom selection is used

SectionEnd

So SectionIn 0 means the custom install type, and everything else remails the same.

Custom is costum meaning the user selects the sections.