The Phoenix and Imprudence viewer now supports automatic prim edge and face alignment. This feature comes courtesy of the former Qarl Linden. Qarl Fizz posted a patch in October 1020, and it's so useful it is already in in Imprudence Experimental Release and in the standard Phoenix release.
To use it, look for new selection checkbox on the build tool, just above “Edit linked parts”. With the build tool open, select a group of prims, then select the “Align” option. Click the arrows and dots that appear for edges. Press Shift and click the arrows that appear for packing the prims together.
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