Editing Escape character (section)

===Communication protocols===
The [[Point-to-Point Protocol]] (PPP) uses the {{code|0x7D}} [[octet (computing)|octet]] ({{code|\175}}, or ASCII: <code>&#x7D;</code>) as an escape character. The octet immediately following should be [[XOR]]ed by {{code|0x20}} before being passed to a higher level protocol. This is applied to both {{code|0x7D}} itself and the control character {{code|0x7E}} (which is used in PPP to mark the beginning and end of a frame) when those octets need to be transmitted by a higher level protocol encapsulated by PPP, as well as other octets negotiated when the link is established. That is, when a higher level protocol wishes to transmit {{code|0x7D}}, it is transmitted as the sequence {{code|0x7D 0x5D}}, and {{code|0x7E}} is transmitted as {{code|0x7D 0x5E}}.