The Internet Transmission Control Protocol (TCP) is implemented as an IMP:
device on this system.  I/O programming for the IMP is described in the UUO
manual, UUO.ME[S,DOC] and UUO.UPD[S,DOC].  The UUO.UPD file contains many
important incompatible changes and must be read.

A summary of user programming for the IMP along with wizard documentation can be
found in IMPSER.DOC[SS,SYS].

The recommended method of programming for the Internet is to use the NETWRK
package, available in FAIL as NETWRK.FAI[S,NET] and in MIDAS as
NETWRK.MID[S,NET].  These packages are essentially black box routines, and will
reflect the current state of the system and host table.  Their calling sequences
are documented in the source files.

While reasonable attempts are made to avoid incompatable changes, the system
UUO's are subject to change as obsolete network operations are deleted or
rewritten and new ones are added.  In other words, use NETWRK!

For network documentation information type HELP NETDOC.