Appendix B. APL Character Set and Overstruck Characters
Overstruck characters are formed by entering one character, backspacing, and enter-
ing the other character. The 5100 APL character set consists of all the characters
represented on the 5100 keyboard plus the following overstruck characters:
200
Function
Comment
Execute
Factorial, combination
Format
Grade down
Grade up
Logarithm
Matrix division
Nand
Nor
Protected function
Quad quote
Rotate, reverse
Transpose
Compress
Expand
Rotate, reverse
Character Keys Used
Note: These are variations of the symbols for these functions; they are used when
the function is acting on the first coordinate of an array.
'I

Appendix C. Atomic Vector
The following chart shows the character, the character name, and the index of
that character in the atomic vector:
Character Character Name
.4.
....
)r:
....
.x.
I"
I..
I
A
v
.... ....
::.
p
Index
(0 lO+l)