October 1, 1979 FORMATTING ALTER CODES
GRID
Horizontal Expansion ____________________
Horizontal expansion is specified in the !+GRID+ code by
placing a number after the symbol to be expanded. Thus, the
symbol "A" is interpreted as the grid character "" by FRESS (see
Figure 4.3). The string "A3" is interpreted to mean, "using the
appropriate horizontal expansion character, extend the grid
character represented by the symbol "A" to a length of 3
characters." By specifying "A3," therefore, the user causes ""
to be printed. Similarly, "E5" results in "" and "2"
results in " " (horizontal expansion characters can be found in
Figure 4.4).
Iteration _________
The pattern described by a grid character symbol and its
expansion may be repeated by preceding the symbol with an
iteration _________ number. Thus, "3E2" means that the pattern represented
by the symbol and expansion number "E2" is to be printed three
times, or

The row _______
A pattern specification such as "A," "4D3," and so on, is
string called a ______. Strings may be combined, if they are separated
by commas, to specify horizontal patterns more complex than the
ones we have seen so far. For example, "A2,3B2,C" results in

The string or strings used in a !+GRID+ code are always enclosed
in parentheses; the combination of strings inside parentheses is
row at least one row called a ___. A !+GRID+ code must consist of ________________,
at least one string and that row must consist of ___________________.
40 -- Section 4. Release 9.1 FRESS Resource Manual
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