3.5.4.2.2.1. Visualize coordinate axes of connection point

For this, under Extras menu -> Settings... -> 3D settings -> tabbed page Elements -> Connection point coordinate system, choose the option For all connection points or For active connection points (as of V12).

Setting "Connection point coordinate system"

Setting "Connection point coordinate system"

Otherwise perform the setting on file level.

$CADENAS_DEFAULTUSER or $CADENAS_USER, psolopt.cfg

[Settings3DPane]
;# 0 = all, 1 = none , 2 = highlightesd/selected coordinate axes visible
#!
cpCoordinateSystem=2