As far as I know, there is no such tool. Common practice is often to use frames, which allow a main document to be split between two (or more) other documents.
An alternative, better, but more complicated way is to use dhtml.
The term for when a company divides or splits into two separate entities is called a "spin-off."
centromere
A country divides governments power is divided between three separate branches.
Divides are the boundaries that separate streams in adjacent drainage basin.
Divides are the boundaries that separate streams in adjacent drainage basin.
When a cell divides, the nucleus divides first in a process called mitosis, ensuring that each new cell receives a complete set of genetic information. After the nucleus divides, the rest of the cell, including the cytoplasm and organelles, divides in a process known as cytokinesis to form two separate daughter cells.
AsexuallyExample- bacteria divides into two separate bacteria.
The divides between watersheds in Russia are commonly referred to as "watershed divides" or "drainage divides." These geographical features separate different river basins and direct the flow of water into distinct drainage systems. In Russia, notable watershed divides include the Ural Mountains, which separate the Caspian Sea basin from the Arctic Ocean basin, and the various mountain ranges across the country that delineate different river systems.
Binary fission is the asexual reproductive process in which a single cell divides into two separate genetically identical cells. This process is common in prokaryotes such as bacteria and archaea.
Divides are the boundaries that separate streams in adjacent drainage basin.
The bar used to separate glass panes in a cabinet is called a muntin. It provides structural support and divides the glass panes to create a grid-like pattern.
The Chromosomes separate from each other and move to opposite ends of the cell.