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FAQ

What is an entity label in XyzPilot?

Entity labels (P0, L1, C2, A3) are the operator-facing identifiers for geometry entities. Labels are monotonic, immutable, and never reused within a project.

Full Answer

PrefixEntity TypeExample
PPointP0, P1, P2
LLineL0, L1, L2
CCircleC0, C1, C2
AArcA0, A1, A2
CUCurveCU0, CU1
Labels are monotonic and immutable: Deleting an entity does not decrement counters or renumber surviving entities. A deleted label is retired and never reused within the same project.

XyzPilot Example

Create P0, P1, P2 Delete P1 → P0 and P2 remain → Next point created is P3 (not P1) → P1 is retired — never reused This ensures L14 always refers to the same line, even after other entities are deleted.

Relevant Operators

Point/X,Y

Coordinate Point

Creates P0, P1, P2... labels.
Line/P,P

Line Through Two Points

Creates L0, L1, L2... labels.
Circle/Centre,R

Circle by Centre and Radius

Creates C0, C1, C2... labels.

Also See

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