visi4dListed are tools recommended during development: 4D-UPA; gen4-PA; uUSB-PA5 (w gen4-IB if using gen4 and pixxiLCD displays); 4D Programming Cable (w gen4-IB if using gen4Workshop5 Workshop5 User Manual Introduction. Workshop5 IDE is the latest release from 4D Systems, desned as a successor to the popular Workshop4 IDE.