System Functions (A-Z)

Name	Description	Form
`⎕`	Evaluated Input/Output	Variable
`⍞`	Character Input/Output	Variable
`⎕A`	Alphabetic uppercase characters	Variable
`⎕Ⓐ` or `⎕Á`	Underscored Alphabetic Characters	Constant
`⎕AI`	Account Information	Constant
`⎕AN`	Account Name	Constant
`⎕ARBIN`	Arbitrary Input	Dyadic function
`⎕ARBOUT`	Arbitrary Output	Dyadic function
`⎕AT`	Object Attributes	Ambivalent function
`⎕ATX`	Extended Attributes	Dyadic function
`⎕AV`	Atomic Vector	Constant
`⎕AVU`	Atomic Vector - Unicode	Variable
`⎕BASE`	Base Class	Reference
`⎕C`	Case Convert	Ambivalent function
`⎕CLASS`	Class	Monadic function
`⎕CLEAR`	Clear workspace (WS)	Constant
`⎕CMD`	Execute the Windows Command Processor or another program	Monadic function
`⎕CMD`	Start a Windows Auxiliary Processor	Dyadic function
`⎕CR`	Canonical Representation	Monadic function
`⎕CS`	Change Space	Monadic function
`⎕CSV`	Comma Separated Values	Ambivalent function
`⎕CT`	Comparison Tolerance	Variable
`⎕CY`	Copy objects into active WS	Function
`⎕D`	Digits	Variable
`⎕DCT`	Decimal Comp Tolerance	Variable
`⎕DF`	Display Format	Monadic function
`⎕DIV`	Division Method	Variable
`⎕DL`	Delay execution	Function
`⎕DM`	Diagnostic Message	Constant
`⎕DMX`	Extended Diagnostic Message	Reference
`⎕DQ`	Await and process events	Monadic function
`⎕DR`	Data Representation (Dyadic)	Ambivalent function
`⎕DR`	Data Representation (Monadic)	Ambivalent function
`⎕DT`	Datetime	Dyadic function
`⎕ED`	Edit one or more objects	Ambivalent function
`⎕EM`	Event Messages	Monadic function
`⎕EN`	Event Number	Constant
`⎕EX`	Expunge objects	Monadic function
`⎕EX`	Expunge objects	Monadic function
`⎕EXCEPTION`	Reports the most recent Microsoft .NET Exception	Reference
`⎕EXPORT`	Export objects	Ambivalent function
`⎕FAPPEND`	Append a component to File	Dyadic function
`⎕FAVAIL`	File system Availability	Constant
`⎕FCHK`	File Check and Repair	Ambivalent function
`⎕FCOPY`	Copy a File	Dyadic function
`⎕FCREATE`	Create a File	Dyadic function
`⎕FDROP`	Drop a block of components	Dyadic function
`⎕FERASE`	Erase a File	Dyadic function
`⎕FHIST`	File History	Monadic function
`⎕FHOLD`	File Hold	Ambivalent function
`⎕FIX`	Fix	Ambivalent function
`⎕FLIB`	List File Library	Monadic function
`⎕FMT`	Format array	Dyadic function
`⎕FMT`	Resolve display	Monadic function
`⎕FNAMES`	Names of tied Files	Constant
`⎕FNUMS`	Tie Numbers of tied Files	Constant
`⎕FPROPS`	File Properties	Dyadic function
`⎕FR`	Floating-Point Representation	Variable
`⎕FRDAC`	Read File Access matrix	Monadic function
`⎕FRDCI`	Read Component Information	Monadic function
`⎕FREAD`	Read a component from File	Monadic function
`⎕FRENAME`	Rename a File	Dyadic function
`⎕FREPLACE`	Replace a component on File	Dyadic function
`⎕FRESIZE`	File Resize	Ambivalent function
`⎕FSIZE`	File Size	Monadic function
`⎕FSTAC`	Set File Access matrix	Dyadic function
`⎕FSTIE`	Share-Tie a File	Dyadic function
`⎕FTIE`	Tie a File exclusively	Dyadic function
`⎕FUNTIE`	Untie Files	Monadic function
`⎕FX`	Fix definition	Monadic function
`⎕INSTANCES`	Instances	Monadic function
`⎕IO`	Index Origin	Variable
`⎕JSON`	JSON Convert	Ambivalent function
`⎕KL`	Key Labels	Monadic function
`⎕LC`	Line Count	Constant
`⎕LOAD`	Load a saved WS	Function
`⎕LOCK`	Lock a function	Ambivalent function
`⎕LX`	Latent Expression	Variable
`⎕MAP`	Map a file	Ambivalent function
`⎕MKDIR`	Create a directory	Ambivalent function
`⎕ML`	Migration Level	Variable
`⎕MONITOR`	Monitor query	Monadic function
`⎕MONITOR`	Monitor set	Dyadic function
`⎕NA`	Declare a DLL function	Ambivalent function
`⎕NAPPEND`	Append to File	Dyadic function
`⎕NC`	Name Classification	Monadic function
`⎕NCOPY`	Copy files and directories	Dyadic function
`⎕NCREATE`	Create a File	Dyadic function
`⎕NDELETE`	Delete a File or Directory	Ambivalent function
`⎕NERASE`	Erase a File	Dyadic function
`⎕NEW`	New Instance	Monadic function
`⎕NEXISTS`	Discover whether or not a file or directory exists	Monadic function
`⎕NGET`	Read Text File	Ambivalent function
`⎕NINFO`	Query or set information about one or more files and/or directories	Ambivalent function
`⎕NL`	Name List	Monadic function
`⎕NLOCK`	Lock a region of a file	Dyadic function
`⎕NMOVE`	Move files and directories	Dyadic function
`⎕NNAMES`	Names of tied Files	Constant
`⎕NNUMS`	Tie Numbers of tied Files	Constant
`⎕NPARTS`	Split a file name into its constituent parts.	Ambivalent function
`⎕NPUT`	Write Text File	Dyadic function
`⎕NQ`	Place an event on the Queue	Ambivalent function
`⎕NR`	Nested Representation	Monadic function
`⎕NREAD`	Read from File	Monadic function
`⎕NRENAME`	Rename a File	Dyadic function
`⎕NREPLACE`	Replace data on File	Dyadic function
`⎕NRESIZE`	File Resize	Dyadic function
`⎕NS`	Namespace	Ambivalent function
`⎕NSI`	Namespace Indicator	Constant
`⎕NSIZE`	File Size	Monadic function
`⎕NTIE`	Tie a File exclusively	Dyadic function
`⎕NULL`	Null Item	Variable
`⎕NUNTIE`	Untie Files	Monadic function
`⎕NXLATE`	Specify Translation Table	Ambivalent function
`⎕OFF`	End the session	Constant
`⎕OPT`	Variant	Dyadic operator
`⎕OR`	Object Representation	Monadic function
`⎕PATH`	Search Path	Variable
`⎕PFKEY`	Programmable Function Keys	Ambivalent function
`⎕PP`	Print Precision	Variable
`⎕PROFILE`	Profile Application	Ambivalent function
`⎕R`	Replace	Dyadic operator
`⎕REFS`	Local References	Monadic function
`⎕RL`	Random Link	Variable
`⎕RSI`	Space Indicator	Constant
`⎕RTL`	Response Time Limit	Variable
`⎕S`	Search	Dyadic operator
`⎕SAVE`	Save the active WS	Function
`⎕SD`	Screen Dimensions	Constant
`⎕SE`	Session Namespace	Reference
`⎕SH`	Execute a UNIX command or another program	Monadic function
`⎕SH`	Start a UNIX Auxiliary Processor	Dyadic function
`⎕SHADOW`	Shadow names	Monadic function
`⎕SHADOW`	Shadow names	Monadic function
`⎕SHELL`	Execute a shell command or another program	Monadic function
`⎕SI`	State Indicator	Constant
`⎕SIGNAL`	Signal event	Ambivalent function
`⎕SIZE`	Size of objects	Monadic function
`⎕SM`	Screen Map	Variable
`⎕SR`	Screen Read	Ambivalent function
`⎕SRC`	Source	Monadic function
`⎕STACK`	Report Stack	Constant
`⎕STATE`	Return State of an object	Monadic function
`⎕STOP`	Query Stop vector	Monadic function
`⎕STOP`	Set Stop vector	Dyadic function
`⎕SVC`	Query access Control	Monadic function
`⎕SVC`	Set access Control	Dyadic function
`⎕SVO`	Query degree of coupling	Monadic function
`⎕SVO`	Shared Variable Offer	Dyadic function
`⎕SVQ`	Shared Variable Query	Monadic function
`⎕SVR`	Retract offer	Monadic function
`⎕SVS`	Query Shared Variable State	Monadic function
`⎕SYSTEM`	System Information	Reference
`⎕TALLOC`	Allocate Token Range	Ambivalent function
`⎕TC`	Terminal Control	Constant
`⎕TCNUMS`	Thread Child Numbers	Monadic function
`⎕TGET`	Get Tokens	Ambivalent function
`⎕THIS`	Self-reference	Reference
`⎕TID`	Current Thread Identity	Constant
`⎕TKILL`	Kill Threads	Ambivalent function
`⎕TNAME`	Current Thread Name	Variable
`⎕TNUMS`	Thread Numbers	Constant
`⎕TPOOL`	Token Pool	Monadic function
`⎕TPUT`	Put Tokens	Ambivalent function
`⎕TRACE`	Query Trace vector	Monadic function
`⎕TRACE`	Set Trace vector	Dyadic function
`⎕TRAP`	Event Trap	Variable
`⎕TREQ`	Token Requests	Monadic function
`⎕TS`	Timestamp	Constant
`⎕TSYNC`	Wait for Threads to Terminate	Monadic function
`⎕UCS`	Unicode Convert	Ambivalent function
`⎕USING`	Microsoft .NET Search Path	Variable
`⎕VFI`	Verify and Fix numeric	Ambivalent function
`⎕VGET`	Value Get	Ambivalent function
`⎕VR`	Vector Representation	Monadic function
`⎕VSET`	Value Set	Ambivalent function
`⎕WA`	Workspace Available	Constant
`⎕WC`	Create GUI object	Ambivalent function
`⎕WG`	Get GUI object properties	Ambivalent function
`⎕WN`	Query GUI object Names	Ambivalent function
`⎕WS`	Set GUI object properties	Ambivalent function
`⎕WSID`	Workspace Identification	Variable
`⎕WX`	Expose GUI property names	Variable
`⎕XML`	XML Convert	Ambivalent function
`⎕XSI`	Extended State Indicator	Constant
`⎕XT`	Query External variable	Monadic function
`⎕XT`	Associate External variable	Dyadic function