If he's talking about the Unfolding option added in 7.5+, then it is normally
"Get > Property > Texture Projection > Unfold", but this option is not present in the free ModTool due to the licensing. If this is the case, I'd recommend the free Roadkill UV (either the XSI plugin, or the standalone)
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If he's talking about the Unfolding option added in 7.5+, then it is normally
"Get > Property > Texture Projection > Unfold", but this option is not present in the free ModTool due to the licensing. If this is the case, I'd recommend the free Roadkill UV (either the XSI plugin, or the standalone)