Rank

Type

Use

S - Scalar or one

B - Boolean

G - Graded

item vector

C - Character

or Grouped

O - One item vector

F - Floating Point

L - Lengths

V - Vector

I - Integer

P - Positions

M - Matrix

N - Numeric

U - Unique

A - Array

Z - Complex

Name

Description

Name

Description

A,AX,AY

General arrays

IM

Integer matrices

BM

Boolean matrices

N,NX,NY

Numeric vectors

BS

Boolean scalars

PAV

Position array of

CA

Character arrays

vectors

C,CX,CY

Character vectors

PS

Position scalars

GAF

Graded array of

UM

Unique matrices

...

floating points

VM

Vector of matrices

GI

Graded integer vectors

VV

Vector of vectors

GM

Graded Matrix

V,X,Y

General vectors

Name

Contents

Definition

ALP

ABCDEFGHIJKLMNOPQRSTUVWXYZ

Upper case alphabet

ALT

abcdefghijklmnopqrstuvwxyz

Alternate alphabet

LOW

abcdefghijklmnopqrstuvwxyz

Lower case alphabet

NUM

0123456789

10 numerals

SEQ

QWERTYUIOPASDFGHJKLZXCVBNM

Arb seq of alphabet

LCT

⎕AF(⍳256)+32×⎕AVεALP

⎕AV with ALP to LOW

UCT

⎕AF(⍳256)-32×⎕AVεLOW

⎕AV with LOW to ALP