Pages can be split either horizontally or vertically. This operation can be performed on a single page or on all pages selected in the Page List.
To split a page, or set the split position for splitting multiple
pages, right-click or control-click on a page to bring up the
contextual menu for that page and select the desired option:
Pages Horizontally or
Split Pages Vertically. A splitter
will be drawn on the page, along with the distance of the splitter
from the edges of the page. Drag the splitter to the desired location,
or nudge it with the arrow keys. Once the splitter is in the desired
location hit the return key to split the page at hand, or hit
option-return to split all pages selected in the Page List at the same
co-ordinate as the model page. Alternatively bring up the contextual
menu and select the desired splitting option from there (single page
or selected pages).
You can exit split mode by selecting one of the basic work modes (toolbar or command 1-4). You can also change splitting axis on the fly by selecting the desired option from the contextual menu, when a split operation is already in progress.