Source code is often grouped using delimiters such as (), {}, [], and <>. These groupings are called levels. The editor understands nested levels, and matches the correct delimiter even if the level spans several pages and contains many levels within it. The editor's functionality allows you to jump quickly between the start and end of a level.
To find a matching delimiter
The insertion point moves forward or backward to the matching delimiter. Choosing the command again returns the insertion point to its starting place. If a matching delimiter cannot be found, the insertion point does not move.