PGL Programmer's Reference Manual

Appendix C Paper Motion Using the EVFU

The four lines of EVFU overlay data (shown in boldface type) follow the two

lines of dynamic data. This overlay data is positioned on the form according to

the specified channel codes called. The superscript hexadecimal numbers

enclosed in < > symbols represent calls to the four unique EVFU channel

codes.

(cc)EXECUTE; formname

[;PAGE

] [;

] [;ICNT

] [;IRST

]

1E 10 11 11 11 1B 13 11 11 12 11 15 11 1F

~AF1;*DYNAMIC DATA #1*

~AF2;*DYNAMIC DATA #2*

<13>

DATA FOR LINE 6

<17>

<10><12>

DATA FOR LINE 9

<1B>

DATA FOR VERTICAL TAB CHANNEL

<15>

DATA FOR LINE 11

[Form Feed character]

(cc)NORMAL

When the IGP/PGL receives a channel call, it searches for that channel from

the current print position in the EVFU load sequence to the end of the EVFU

load sequence. If that channel is found, the current print position moves to

that position on the page. If the channel is not found, the search continues

from the beginning of the EVFU load sequence to the current print position. If

this search is successful, the current form is printed, the next form is called,

and the current print position moves to that position on the next page. If the

channel called is not found in either search, the channel call is treated as if it

were a line feed.