This is a different question.
A few weeks ago, you told me about Id, "Transparency blend space to handle mixed color modes, when the spread has transparency."
Could you explain more about that with an example, if you don't mind?
Hosun
InDesign lets you mix color spaces on the same page—it doesn’t have a single document color mode the way Photoshop and Illustrator do.
When you print (or export a page to an image format) there can only be one output color space—all of the color has to be flattened into a single destination space. The Transparency Blend Space previews the page in the expected output color space—it’s a preview not a conversion.
Here I have CMYK, RGB, and Lab color fills with a transparent object on the page. If the Transparency Blend Mode is set to RGB, the preview shows the expected color when the three color spaces are converted into my document’s RGB space at output or export—it is the color I would get if I exported a JPEG to document RGB. Images can only be in a single color space:

If I set the blend mode to CMYK, the preview shows how the RGB and Lab fills will be converted into my document’s CMYK space—Coated GRACol 2006 is my assigned CMYK profile. You can see the orange is outside of the GRACoL CMYK gamut so its soft proof appearance changes:
