entmake

lets a program add entities and block definitions to the drawing without using commands. It also allows the replacement of existing block definitions.

nentsel

allows the selection of entities nested within block definitions, individual polyline vertices and individual block attributes for application-specific purposes, in addition to entities selectable via the (entsel) function.

wcmatch

compares a string against a wild-card pattern specification and returns a status to indicate whether it matches or not.

cvunits

and corresponding -acad.unt file allows conversion between different units of measurement.

xload, xunload, ads

AutoLISP functions manage the loading, unloading, and listing of ADS programs.

entget

allows the specification of (regapp) names to retrieve Xdata for an entity.

entmod

operates on entities within block definitions, and also allows one to selectively add or replace Xdata by (regapp) name.

(ssget "x")

now accepts wild-card pattern specifications for supported name group codes (0, 2, 6, 7, and 8).

handent

can now access handles for entities nested within block definitions.