I've just started using illustrator to help me with my uni work, I study architecture and I am using it to help me create a drawing I made on a different program. I have 3 layers, one of the layers I used the clipping mask tool, I tried to do the same on the third layer but it won't let me can anyone tell me why this is? Edit: Maybe I was not as clear before, but I want to use the 'release' option of the clipping mask tool
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