> net#arf:$.a500.RiscOS+.doc.SystemDevs

 Description: Documentation of changes to SystemDevices module for PRM
 Authors: Tim Dobson, David De Vorchik
 History:
    01-Dec-89  TMD      Created
    12-Jan-91  DDV      Printer:, Serial: removed on SystemDevs 1.15

 Changes to SystemDevices since RISC OS 2.00 (SystemDevices 1.13)
 ----------------------------------------------------------------

 1.14
 ----

OS_File 6 (delete a file) now returns object type 0 (no object found) on all
filing systems provided by this module, ie null:, vdu:, rawvdu:, kbd:
rawkbd:, printer:, serial:, rather than returning an error.

This means that eg '*Remove null:' now works without giving an error.

 1.15
 ----

Serial: & Printer: filing systems exported into seperate modules, see 
DeviceFS and Serial documentation.

