The program reads data from the terminal using the SIK3 key. The protocol for this key bears a resemblance to the byte stream protocol {(p3,bytstream)}.

SIK3(limit ==> c,data;,,,SIK3) where limit < 4097.

c=kt+1: The data connection is broken {circuit zapped or terminal turned off}.

SIK3(kt ==> x'19',(X'0102');,,,SIK3) Alleged type

SIK3(kt+1) Signal EOF


Non-buffering property