Matrix is an open standard for decentralised communication, providing simple HTTP APIs and open source reference implementations for securely distributing and persisting JSON over an open federation of servers.

User agents need to store large numbers of objects locally in order to satisfy off-line data requirements of Web applications. [WebStorage] is useful for storing pairs of keys and their corresponding values. However, it does not provide in-order retrieval of keys, efficient searching over values, or storage of duplicate values for a key.

The following describes general guidelines for extending regular
expression engines (Regex) to handle Unicode. The following issues are
involved in such extensions.
Unicode is a large character set—regular expression engines that are
only adapted to ha