(
(
(
ABS
(xl absolute value
of
x 50
ACS
(xl are cosine
of
x 50
addition
51,118
adjusting forms thickness 173
alphabetic characters 40, 143
AND symbol
(&1
41,78
APL continued file
38
APL internal data 25, 28, 38
APL SAVE file 38
APL symbols
3,6
arithmetic arrays 48, 114
arithmetic constants 44
arithmetic data
41,99,105
arithmetic data formats
42
arithmetic format selection
43
arithmetic hierarchy 53
arithmetic operators
51
arithmetic variabl
es
44, 112
array element values 67, 114
array elements
45,114
array expressions 46, 51, 56
array size 67, 114
arrays 45, 114
ASN
(xl arc sine of x
50
assigning array elements
to
a file
140
assigning values
to
array elements 62, 114
ATN
(xl arc tangent
of
x 50
ATTN key 4, 18
AUTO command 10
automatic statement numbering
10,18
auxiliary tape unit 32, 163
backspace key 5, 159
BASIC character set
40,147
BASIC file type
15,36
BASIC keys file 38
BASIC source file 25,
28,38
BASIC statement keywords 3
BASIC statements 57
BASIC work area file
38
BASIC/APL switch
5,158
blank characters
9,41,99,132
BRIGHTNESS switch
5,158
byte storage considerations 145
capacity, storage 7
centimeters per inch
(&INCMI
44
CHAIN statement
60,66,112,143
changing execution mode
11
character arrays 49, 132
character constants 19, 45, 62,
81
,
132
character data 45, 105
character expressions
54,89
character sequence 147
character variables 45,
62,
112
checkout procedures 158
cleaning
the
tape head 164
clearing
the
work area
15,37,
144, 161
CLOSE statement 61, 130
CMD
function keys 18
CMD
key 4
command keywords 8
common storage area
11
2
communications
38
comparisons 55, 78
compatibility
to
IBM
370/VS BASIC 143
computed GOSUB 75
computed GOTO 77
control variable
71
copy display 4
copy IMFs
to
a cartridge 25, 27
COS
(xl cosine
of
x radians 50
COT (xl contangent
of
x radians
50
CSC
(xl cosecant
of
x radians
50
cursor 2, 158
customer support cartridge 25
cut
forms
171
!
data constants
40
data excharge file 25, 28,
38
DATA file type
15,36
data secu rity 144
DATA statement
62,105,109,141
data table pointer
62,
105,
141
debugging 33
decimal point 29
declaring arrays
47,113
DEF statement
64,88
DEG
(xl degrees
in
x radians
50
DEL function 7
delete function 5
deleting statement lines 7
DET (xl determinant
of
an arithmetic array 50, 126
device address 15, 32,
86
diagnostic file 38
DIM
statement
67
DIR 38
directory, tape
37
Index
177
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