The routine names in this chapter end with the letter “P” to indicate line printer plotting and every routine starts printing at the beginning of a new page.

Depending on the nature of plots, some routines allow the user to change page width and/or length. This capability is specified in each routine and, if allowed, can be done by calling the routine PGOPT (see Chapter 19, “Utilities”) in advance. To change the page width, the user should make the following call to PGOPT:

CALL PGOPT(–1, IPAGEW)

where IPAGEW indicates the page width in columns. To change the page length, the user should make the following call to PGOPT:

CALL PGOPT(‑2, IPAGEL)

where IPAGEL indicates the page length in rows. See the PGOPT document for more information.