MUMPS/MUMPS Language Elements

Introduction

MUMPS has abbreviations for each command. We will have sections in this page for each character of the alphabet. This information is from Ed de Moel's MUMPS by Example web page. Unless otherwise stated, all commands on this page are part of the Standard MUMPS Language and are implemented by all Standard MUMPS vendors. Any commands that are not implemented by all Standard MUMPS vendors are not used by VistA application code.

Commands

Unless otherwise stated, each command may be followed by the colon (:), then a postcondition which is an expression that when evaluated is interpreted as either True (1) or False (0). When the postcondition is interpreted as True, the command is executed with its arguments. When the postcondition is interpreted as False then the command is NOT executed with its arguments and is skipped. The postcondition functions as a "guard" that either allows the command to be executed or not.

Unless otherwise stated, most commands are followed by a space and more information needed to complete the command action. This extra information is a command argument. Most commands that have NO argument will take a default action. The commands that have no extra information are called argumentless commands.

command A

Currently, the letter A is the abbreviation for the command ASSIGN. This command is not implemented by all vendors.
Currently, the letter A is the prefix for several commands:
Currently, AB is the abbreviation for the command  ABLOCK. This command is not implemented by all vendors.
Currently, ASTA is the abbreviation for the command  ASTART. This command is not implemented by all vendors.
Currently, ASTO is the abbreviation for the command  ASTOP. This command is not implemented by all vendors.
Currently, AUNB is the abbreviation for the command  AUNBLOCK. This command is not implemented by all vendors.

The letter A used to be the abbreviation for the command ASK.

command B

Currently, the letter B is the abbreviation for the command  BREAK.

command C

Currently, the letter C is the Abbreviation for the command CLOSE.

command D

Currently, the letter D is the Abbreviation for the command  DO.

command E

Currently, the letter  E is the Abbreviation for the command ELSE.
Currently, the letter E is the prefix for several commands:
Currently, ESTA is the abbreviation for the command  ESTART. This command is not implemented by all vendors.
Currently, ESTO is the abbreviation for the command  ESTOP. This command is not implemented by all vendors.
Currently, ETR is the abbreviation for the command  ETRIGGER. This command is not implemented by all vendors.

command F

Currently, the letter F is the Abbreviation for the command FOR.

command G

Currently, the letter  G is the Abbreviation for the command GOTO.

command H

Currently, the letter  H is the Abbreviation for the command HANG.
Currently, the letter  H is the Abbreviation for the command HALT.

command I

Currently, the letter  I is the Abbreviation for the command IF.

command J

Currently, the letter  J is the Abbreviation for the command JOB.

command K

Currently, the letter  K is the Abbreviation for the command KILL.
Currently, the letter K is the prefix for several commands:
Currently, SK is the abbreviation for the command  KSUBSCRIBPTS. This command is not implemented by all vendors.
Currently, KV is the abbreviation for the command  KVALUE. This command is not implemented by all vendors.

command L

Currently, the letter  L is the Abbreviation for the command LOCK.

command M

Currently, the letter  M is the Abbreviation for the command MERGE.

command N

Currently, the letter  N is the Abbreviation for the command NEW.

command O

Currently, the letter  O is the Abbreviation for the command OPEN.

command P

Currently, the letter  P is NOT an abbreviation for any command
used to be Abbreviation for the command PRINT

command Q

Currently, the letter  Q is the Abbreviation for the command QUIT.

command R

Currently, the letter R is the Abbreviation for the command READ.
Currently, the letter R is the prefix for several commands:
Currently, RL is the abbreviation for the command  RLOAD. This command is not implemented by all vendors.
Currently, RS is the abbreviation for the command  RSAVE. This command is not implemented by all vendors.

command S

Currently, the letter  S is the Abbreviation for the command SET.

command T

Currently, the letter  T is NOT an Abbreviation for any command.
Currently, the letter  T is the prefix for several commands:
Currently, TC is the abbreviation for the command  TCOMMIT. This command is not implemented by all vendors.
Currently, TH is the abbreviation for the command  THEN. This command is not implemented by all vendors.
Currently, TRE is the abbreviation for the command  TRESTART. This command is not implemented by all vendors.
Currently, TRO is the abbreviation for the command  TROLLBACK. This command is not implemented by all vendors.

command U

Currently, the letter  U is the Abbreviation for the command USE.

command V

Currently, the letter  V is the Abbreviation for the command VIEW.
As per the MUMPS Standard all 

1. REDIRECTM/Mmeta are defined by an implementation by a vendor.

command W and w

Currently, the letter  W is the Abbreviation for the command WRITE.

command X

Currently, the letter  X is the Abbreviation for the command XECUTE.

command Y and y

Currently, the letter  Y is NOT an abbreviation for any command.

command Z and z

Currently, the letter  Z is NOT an Abbreviation for any command.
Currently, letter Z is the PREFIX for several commands.
As per the MUMPS Standard all commands with Z are defined by an implementation by a vendor.