Well, even when there are not lacunae as such, most of the details are very sketchy. For example, I've been looking at the manual to help me in the Hair Room, and although e.g. all the styling tools are listed, all they get are a couple of sentences each, which frankly allows you to know (kinda) what the tool is for, but doesn't really teach anything about its use, still less optimal methods.

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Hardware: AMD Ryzen 9 3900X/MSI MAG570 Tomahawk X570/Zotac Geforce GTX 1650 Super 4GB/32GB OLOy RAM

Software: Windows 10 Professional/Poser Pro 11/Photoshop/Postworkshop 3