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_TELNETrflWrite
Define a callback that will be evaluated when data can be sent.

TELNET _TELNETrflWrite (
TELNET _telnet_
fun [TELNET u0] u1 _callback_
u0 _user_
)
Parameters

_telnet_
telnet connection
_callback_
callback function
_user_
user parameter
Return value

telnet connection

Error :