Table of contents not updating
In this case, the comment describes a permissible variation of the syntax.
A table of contents (TOC) provides a quick reference point for your document, giving the reader a brief overview of where to find what content.
Each gateway will need to keep track of which way to deliver various packages of data, and for this it uses a Routing Table.
A routing table is a database which keeps track of paths, like a map, and allows the gateway to provide this information to the node requesting the information.
A routing table uses the same idea that one does when using a map in package delivery.
Whenever a node needs to send data to another node on a network, it must first know where to send it.
If the node cannot directly connect to the destination node, it has to send it via other nodes along a proper route to the destination node.