530 - 17th March 1992
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GLOBAL 3000 - SCREEN HANDLING
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Global 3000 is the new range of software from TIS Software which
has been developed over the past year.	 A  major  part  of  the
development  is the introduction of sophisticated screen enquiry
and  newer  dialogue  standards.   These  enquiries  have   been
designed  for  more  advanced screens than the equivalent Global
2000 products whose dialogue standards	were  designed	for  the
typical screens available in 1985.
 
For  Global  3000  to  work  fully requires a screen with 16 (or
more)  function  keys  with  either  a	full  range  of   screen
attributes  (highlighting, reverse video - which do not occupy a
space on the screen) or colour support.
 
Global 3000 can work on  screens  with	less  function	keys  or
attributes  than  those  described but either the current record
will not be highlit (which  makes  it  difficult  to  see  which
record	you  are  amending)  or  the  keyboard	handling  may be
awkward, requiring composite keystrokes (eg <CTRL N>).
 
TIS  Software  have  used  a  number  of  screen  types  in  the
development  of  Global  3000  software  and  can state that the
following list of screens will have a satisfactory performance: 
    Wyse 50 (a special TAP [164] has been written)
 
    Wyse 60 (do not use the AT-style keyboard - the ASCII or
	     enhanced PC-Style are better)
 
    Wyse 370
 
 
Wyse 30 screens are not suitable for Global 3000 software.
 
Whilst still a bit expensive, colour diskless PC's running  PCWS
might be worth considering.
 
A  number  of  other  screen  types  will  obviously satisfy the
criteria needed for Global 3000 software.  When setting  up  the
screen	and keyboard definitions (using $BAM), you should follow
the standard tap for  colour  integral	screens  as  closely  as
possible, ensuring that the following guidelines are observed:
 
    F8 should be set up to be the HELP key
 
    F1,  F2  and F3 should be User Function keys 1,2 and 3 - not
    insert space and change case
 
NOTE
++++
 
The Wyse 50 has limited screen attributes but a good keyboard.
 
The Wyse 60 has excellent screen capabilities but we have  found
a  problem  in the keyboard handling, both within System Manager
and Unix.  If a Wyse 60 is refreshing the screen  and  the  user
enters type-ahead characters these characters are often 'lost'.