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Appendix A
Appendix ........................................251
Opus 5.5 Environment Variables ..................251
View Font .......................................252
Compatibility ...................................253
Opus 5.5 Environment Variables
Although most of the operation of Opus 5 can be controlled through the
Environment and Options settings, some specialised functions are
controlled through system environment variables in the ENV: directory.
These are:-
dopus/dopus
Stores temporary preferences for the main Opus 5 program.
dopus/UseWBInfo
Forces the icon.module to call the OS WBInfo() routine to do the icon
information function. (This only works under V39, and may only work if
you have Workbench running). It is designed to let you use patches like
SwazInfo.
dopus/ShowUseDatatypesFirst
The show.module uses its own IFF code in preference to datatypes IFF,
since datatypes can be slower with more problems. If required, you can
force Opus to use datatypes first by setting this variable.
dopus/3DLook
A special flag to provide compatibility with programs such as SysiHack.
dopus/Text Viewer
Stores preferences and information for the Opus text viewer.
dopus/Print
Stores preferences and information for the Opus print functions.
Directory Opus 5 251
Appendix B - ViewFont
Opus 5 has no built-in font viewer. To solve this problem we have
provided the ViewFont program as a seperate stand alone program. This
normally resides in the DOpus5:C directory. It can be used from within
Opus 5 to show a sample of your selected fonts.
The template for the program is
FONT,SIZE/N,B BOLD/S,I ITALIC/S,
U ULINE/S,PUBSCREEN/K:
From within Opus 5, the easiest way of using the program is to create a
Filetype which recognizes fonts and then calls ViewFont. We have provided
such a filetype as part of the standard Opus 5 installation. Take a look
at the Filetype to see how this was done.
252 Directory Opus 5
Appendix C - Compatability
Directory Opus 5 is written with system compatibility in mind. It is
complient with the Amiga Style Guide principles and will operate without
problems on all Amiga Operating Systems from Workbench 2.0 thought 3.1.
At the time this manual was written we are aware of a few programs which
may cause problems when run with Opus 5.5.
CrossDOS
The version of CrossDOS [l:CrossDOSFileSystem 38.9 (12/06/92)] which comes
with AmigaOS 3.0 appears to have a bug which affects Opus. If you insert
a CrossDOS floppy disk, open an Opus lister for it, then remove the disk
and insert a different CrossDOS disk, CrossDOS may lock up.
Solutions:-
Install the version of CrossDOS which comes with AmigaOS3.1 or buy
CrossDOS 6.
Make sure you close listers for CrossDOS devices before changing disks.
Cybergraphix
Users of Cybergraphix should be aware of the following variables:
CPUP2C: set to 0 (off). When on causes selected icons in buttonbanks to
render in the default four system colours.
PLANES2FAST: set to 0 (off). When on causes garbage and slow-down when
dragging icons.
NOPASSTHROUGH: set to (0) off if you have problems using DeluxePaint.
Directiory Opus 6 253
24-Bit Datatypes
If you are using the unofficial 24-bit datatypes, the animations in the
About window of Opus will appear as garbage. This appears to be the fault
of the datatype and may be fixed in a later version. Install the official
datatypes if it causes other problems.
254 Directory Opus 5