Trail: PROIV Documentation > Administration > Windows Environment Guide > External Services

LINK – Calls a subroutine directly from the kernel.

LINK-CRT  - Calls an external procedural language routine from PROIVXX and provides for screen refreshing.,  

LINK-CLIENT – Calls a subroutine from the MFC Client. 

LINK_CLIENT_VAR – A replacement for LINK-CLIENT; calls a subroutine from the MFC Client.  

SYSTEM logic verb – The prefix ‘!’ allows a program to be executed from PROIV.

XFER Logic Verb – Transfers control of processing to an external program. Control does not return to PROIV.

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Topic ID: 750017