Radio Shack TRS-80 PC-3 Owner's Manual page 128

1 DIM dim list
or:
and: dimension spec. is:
or:
and: numeric dim spec is:
and: string dim spec is:
Where: dim list
and:
and:
and:
and:
and:
is:
or:
numeric name is:
string name is:
dims is:
or:
size is:
len is:
dimension spec.
dimension spec., dim list
numeric dim spec.
string dim spec.
numeric name (size)
string name (dims)
string name (dims)
*
~
valid numeric variable name
valid string variable name
size
size, size
number of elements
length of each string in a string array
Abbreviations: D., DI.
Purpose
The DIM verb is used to reserve space for numeric and string array variables.
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