English to Italian Tech/Engineering Mechanics / Mech Engineering slotting tool

Checking processing start position and direction in multiple-part processing

Check the sequence of slitting a single part.
CAM NC
Process Order - Tool Switch Instruction - Top to Bottom
At this time, select the assigned slotting tool.
After specifying multiple-part processing, specify its start position and direction.
CAM NC
Process Order - Process Order Manual Change
Change of Multiple Arrangement Starting Pos., Direction
At this time, select the assigned slotting tool.
To specify processing start position, press TL or TR
To specify processing direction, check X Dir.
Priority radio button
Check the tool paths on the Confirm Drawing and Simulation displays.
Check the programmed multiple-part processing start position **by step drawing** on the Simulation display.
Multiple-part processing instructions from the turret side of the machine prevent positional misalignment and slug jamming due to insufficient web strength.
Perform processing with the slotting tool when the worksheet is stable enough.

Non riesco a capire il significato.
Non si tratta di "step drawing". Ho pensato a "step by step" drawing. Ma non sono sicura.
Mi sembra forse più probabile che dopo step ci vada una virgola, ma anche qui ...?
Chiederò cmq al cliente, ma intanto volevo un vostro supporto. Forse sono io che non riesco a interpretare bene la frase.