The Left Angle Cross of Dedication is named for Gate 43 and Gate 23, which are in fact the two ends of one channel, Structuring. Human Design reads Gate 43, from Hexagram 43, Breakthrough, sits in the Ajna and is read as sudden inner knowing that arrives whole and resists easy explanation; and Gate 23, from Hexagram 23, Splitting Apart, sits in the Throat and is read as the voice that turns a strange individual insight into shared language. It sits in the Left Angle family, and Human Design reads that group as outward facing, less a chosen plan than a role other people keep handing back.
Its design half is Gate 29 and Gate 30. Gate 29 sits in the Sacral centre and is read as a sacral yes that, once given, perseveres to the end whatever the cost; it pairs with Gate 46 in the channel of Discovery. Gate 30 sits in the Solar Plexus and is read as the longing and intensity of feeling that pulls a person into experience; it pairs with Gate 41 in the channel of Recognition.
So a chart carrying this cross names an insight that has to fight to be understood, one whole channel doing both the knowing and the telling, while beneath it a committed perseverance answers to an emotional longing that will not rest. Both hexagrams are old texts; pairing them this way as a life direction dates from the system's founding in 1987.