ENFORM Reference Manual

AS Clause

Clauses

5–12 058057 Tandem Computers Incorporated

Mask Edit Descriptor

The mask edit descriptor specifies a display format according to a template. The

syntax is:

mask

is a set of symbols or characters enclosed within quotation marks (“ ”),

apostrophes (‘ ’), or angle brackets (< >). The symbols in a mask that serve a

special function are:

Z is a digit selector. Z specifies that if no digit exists, zeros are suppressed. Z

can be used with alphanumeric or numeric data. Note: only a capitol Z is the

special symbol.

9 is a digit selector. If no digit exists, zeros are printed; used for numeric data

only.

V indicates decimal alignment for the display format. When V is specified, the

decimal point is not printed. Note: only a capitol V is the special symbol.

. indicates decimal alignment for the display format. When the symbol .

(period) is used, the decimal point is printed.

Numeric Values. If the mask specified for a numeric value is too small, an overflow

condition occurs.

The special symbols Z and 9 describe numeric values. If the digit selector is a 9,

ENFORM prints the corresponding data digit. If the digit selector is a Z, ENFORM

prints the corresponding data digit unless it is a leading or trailing zero. In this case,

ENFORM blank fills the position held by the zero.

Decimal point location can be indicated for numeric values by using either the

symbol . or the symbol V. When the symbol . is used, a decimal point prints. When

the symbol V is used, it indicates only decimal alignment and no decimal point prints.

If neither the symbol . nor the symbol V is specified, ENFORM assumes the decimal

point is the rightmost character of the entire mask.

Alphabetic Values. Alphabetic values must be specified by the symbol Z in a mask edit

descriptor.