Control Data Corporation 3300 Reference Manual page 259

Identifier
An identifier is a data name followed, as required, by the syntactically correct combination of
qualifiers, subscripts, or indexes necessary
to make unique reference to a data item.
Examples:
DA Y OF MASTER-DATE
FIRST IN GRADE-ONE
MALE-FEMALE (2,5,1)
Qualifier
Every name in a source program must be unique, either because no other name has the identical
spelling, or because the name exists within a hierarchy of names, such that it can be made unique
by mentioning one or more of the higher levels of the hierarchy. The higher levels are called
qualifiers when used in this way. The qualification process is performed by writing IN or OF after
the name followed by a qualifier. The choice between IN or OF is based on readability; they are
logically equivalent. Only sufficient qualification must be mentioned to make the name unique.
Whenever the data item or paragraph is referenced, any necessary qualifIers must be written as
part of the name.
Literal
A literal is a string of characters. Literals may be numeric or non-numeric.
Non-Numeric Literal
A non-numeric literal is a string of any characters allowable in the computer's character set
(including reserved words but excluding the quotation mark) and bounded by quotation marks. The
value of a non-numeric literal is the string of characters itself, exc1udiilg the quotation marks.
Any spaces included between the quotation marks are part of the non-numeric literal and, therefore,
are part of the value. All non-numeric literals are classed as alphanumeric. They may contain
from 1 to 120 characters excluding the quotes.
Examples of non-numeric literals:
"LINE-COUNTER"
"PAGE 144 IS MISSING"
"A BCD E F"
"-125.56"
"PAGE NUMBER IS "
The literal "-125.56" is not the same as the literal -125.56; the quotation marks make it a non-
numeric literal and prevent it from being used for computation.
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