Type Entry: USUBR

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Type Entry: USUBR

Name

USUBR

Class

Type (function designator)

Description

A user-defined subroutine (a function created by defun / lambda). clautolisp returns USUBR for a user lambda (#<USUBR LAMBDA> → USUBR).

Representation

An opaque callable object created by user code.

Valid Operations

  • called in functional position; passed to apply / mapcar; type

Compatibility

Cross-vendor divergence: BricsCAD V26's probe returns SUBR (not USUBR) for a user lambda; clautolisp returns USUBR. See "Type Entry: SUBR".

Availability

  • AutoCAD 2026: designator for user functions to be confirmed by probe.
  • BricsCAD V26: user lambdas observed as SUBR, not USUBR.
  • clautolisp: USUBR for user functions.
  • Status: host-divergent (SUBR vs USUBR); probe evidence.

Source Notes