# ERSATZ

> [HTML Version](ersatz_lit.htm)

_Updated February 2026_

**ERSATZ**

list existing ersatz definitions

**ERSATZ file**

load (or reload) definitions from _file_

**ERSATZ erzname:=dev:\[p,pn\]**

add or update single ersatz definition

ERSATZ (syntax one, above) displays the list of current ersatz device definitions. These definitions are maintained within one or more text files, each of which is referenced via an ERSATZ= statement in miame.ini or was added by this command using syntax two or three. The ersatz devices may be used syntactically just like real device names.

Syntax two and three, above, allow you to (re)load ersatz definitions, either from a file or a single definition, without needing to re-launch A-Shell. This may be useful in applications where the specific location of certain system-wide ersatz devices (e.g. REPORTS:) may need to change based on the user, menu selection, etc.

**See Also**

•	[ERSATZ](ersatz_sp.htm.md)[SP](keyword-types.htm.md)

•	[MX\_SETERSATZ](mx_setersatz.htm.md)[XS](keyword-types.htm.md)

**History**

2026 February, A-Shell 7.0.1783, ERSATZ.LIT 2.1(104):  Add ability to update ERSATZ device definitions.