User`s guide

4-152
Guide to Printers and Printing
11.%CO – Pushes a 0 onto the stack since the O flag was not used on the command line.
12.%t – Pops the 0 off the stack and, since it is a FALSE (zero) value, calls for the
evaluation of %G_u. The stack labeled Wu is now empty.
13.%G_u – Pushes a 1 onto the stack.
14.%d – Pops the 1 off the stack and returns it, in ASCII format, to the in–progress
calculation of wQ.
15.%{0} – Pushes a 0 onto the stack.
16.%= – Pops the 0 and 1 off the stack, compares them for equality, and pushes the
resultant 0 onto the stack.
17.%t – Pops the 0 off the stack and, since it is a FALSE (zero) value, calls for the
evaluation of %GWu.
18.%GWu – This value is already known, so a 1 is pushed onto the stack.
19.%{1} – Pushes a 1 onto the stack.
20.%= – Pops the two 1s off the stack, compares them for equality, and pushes the
resultant 1 onto the stack.
21.%t – Pops the 1 off the stack and, since it is a TRUE (non–zero) values, calls for the
evaluation of %Gs1.
22.%Gs1 – Pushes a 1 onto the stack.
23.%d – Pops the 1 off the stack and returns it, in ASCII format, to the in–progress
calculation of wK.
24.%Pq – Pops the 1 off the stack and stores it in the internal variable q.
25.%GWu – This value is already known, so a 1 is pushed onto the stack.
26.%{3} – Pushes a 3 onto the stack.
27.%< – Pops the top two values off the stack (a 3 and a 1) and, since 1 is less than 3,
pushes a 1 onto the stack.
28.%t – Pops the 1 off the stack and, since it is a TRUE (non–zero) value, calls for the
evaluation of %pq.
29.%pq – Pushes the value of the internal variable q, a 1, onto the stack.
30.%{1} – Pushes a 1 onto the stack.
31.%= – Pops the top two values (two 1s) off the stack, compares them for equality, and
pushes the resultant 1 onto the stack.
32.%t – Pops the 1 off the stack and, since it is a TRUE (non–zero) value, calls for the
evaluation of %{3200}.
33.%{3200} – Pushes a 3200 onto the stack.
34.%d – Pops the 3200 off the stack and returns it to the in–progress calculation of _w.
35.%G_p – Pushes a 12 onto the stack.
36.%{17} – Pushes a 17 onto the stack.
37.%= – Pops the top two values (a 17 and a 12) off the stack, compares them for equality,
and pushes the resultant 0 onto the stack.
38.%t – Pops the 0 off the stack and, since it is a FALSE (zero) value, calls for the
evaluation of %G_p.
39.%G_p – Pushes a 12 onto the stack.
40.%{10} – Pushes a 10 onto the stack.