Miscellaneous

Name	Description
⎕Ⓐ	Underscored Alphabetic Characters
⎕AV	Atomic Vector
⎕AVU	Atomic Vector - Unicode
⎕KL	Key Labels
⎕PFKEY	Programmable Function Keys
⎕SD	Screen Dimensions
⎕SM	Screen Map
⎕SR	Screen Read
⎕OPT	Variant Operator
⎕TC	Terminal Control
⎕XT	Associate External variable
⎕XT	Query External variable