OHP_Show (Version 2.5) Help
===========================

Introduction
------------
OHP_Show is Copyright © Tony Still and Photodesk Ltd 1998,1999, 2002 (see
below).

This is a viewer application for presentations produced using Photodesk's OHP
application. OHP_Show includes all the presentation effects and controls from
OHP but cannot create, change or save presentations. It will work on RISC OS
3.50 and later (eg RISC PC, A7000, A7000+, RiscStation, IYONIX), it likes
StrongARM, RISC OS 4 and RISC OS 5! You should ideally copy OHP to your hard
disc and run it from there. 

The full version of OHP has a desktop drag and drop editor that works very much
like the Filer to let you add, order and delete Sprite, Draw, Artworks and JPEG
files as the slides in your presentation. You can define transition effects
between the slides and an OLE function lets you edit slide graphics directly
from the presentation window. Slide timings can be set or measured when showing
the presentation full-screen on the computer's monitor. 

OHP_Show supports Interactive Help - please turn it on. 

Presentation Controls
---------------------
To show a presentation, double-click the file or drag it to the OHP_Show icon
on the icon bar. If you do not have enough memory, change to a mode with a
smaller size or with less colours (or both); try to use at least 256 colours.
Some controls are available from the Choices dialogue box - use interactive
help (!Help) to understand this. 

When a presentation starts, use SELECT to move forward and ADJUST to move
backwards (or the left and right arrow keys). If the presentation has been set
to automatically show, leave it to change on its own (and it may loop). To exit
a presentation, move forward from the last slide (unless it loops) or press
ESCAPE or F12. 

During the presentation, click MENU (or press F1 or down arrow) to get a help
screen of presentation controls: 

* F1 (RISC OS's designated help key) also accesses the Help screen. 

* B gives a black, Blank screen. This is useful if you want to stop
  your audience being distracted, perhaps during a digression. You
  can also draw on the blank screen. 

* D engages the Drawing tool, a pencil pointer appears (unless you
  have hidden the pointer). You can draw with the mouse by holding
  down Select; note that you cannot change slide whilst drawing
  (though you can access the Help screen, blank the display or
  refresh your slide-all of which will erase your drawing). The
  colour and thickness of the drawing tool's line can be set from the
  Choices dialogue box. 

* R Refreshes the current slide. This will erase any drawing and also
  cancels the Help screen if this has been selected. 

* P activates the normal RISC OS Pointer arrow. You can use this to
  emphasise parts of your slide. It also works with the Drawing tool
  in that it will hide the pointer, even the pencil pointer, so you
  can draw without a visible pencil if you wish. 

* S takes a Snapshot of the current screen display, complete with any
  drawing, as a sprite. This allows you to capture any graphic file,
  originally in any OHP-compliant format, complete with its
  background, for subsequent use in Paint, Photodesk etc. You can
  also capture those masterpieces created with the drawing tool.
  Sprites are saved into a new directory, called OHP_Grabs, created
  in the same directory as the Script file (or in the same directory
  as the OHP_Show application if the Script has not yet been saved).
  Snapshot files will have sequential file names but note that
  quitting and restarting OHP_Show will cause old snapshots to be
  overwritten by new ones reusing the same names. 

* Space cancels all the above controls and returns the display to the
  current slide. 

* F12, Escape and Q all return you to the desktop. The slide being
  displayed will be selected in the script window if the presentation
  was not at its end. This makes it easy to restart the presentation
  where you left off using Show part from the root menu. 

The Slide Hopper
----------------
During a presentation, you can also move quickly between slides using the Slide
Hopper should you need to refer back (or forwards) to a particular slide. Press
and hold the CONTROL key; depending on your Choices settings, information on
the current slide will appear at the bottom left corner of the screen. This
will be a miniature picture of the slide, its file name or both. 

Still holding the CONTROL key down, clicking SELECT on the mouse will move the
Hopper view forwards through the slides (or ADJUST will move backwards). When
you release the CONTROL key, OHP_Show will move to the last slide shown in the
Hopper display. If you change your mind, clicking MENU on the mouse will take
the Hopper display back to the current slide. 

You can also use the left and right arrow keys with the Slide Hopper. This
allows one-handed operation. In this case, the down arrow key will take the
Hopper back to the current slide. The Slide Hopper also acts as a mute key:
pressing CONTROL mutes any current sound. The Hopper is also the mechanism to
show any hidden slides (OHP_Show usually skips over these while presenting). 

Editing Presentations
---------------------
If you buy the full version of OHP, you can create and edit presentations.
Clicking SELECT on the OHP icon (on the Icon Bar) will create a new
presentation. You are advised to save the OHP Script file into a directory with
your slide graphic files. The slides can then be dragged from the Filer window
into the OHP Script window. They can be ordered by dragging them around. If a
slide is not to your liking, CONTROL-double-click will OLE it into its native
editor for amendment; when you save it, OHP will automatically update its views
of the slide. 

Sound effects can be added by dragging their files onto the appropriate slide
in the Script window. 

Transitions can be added to slides by selecting them and choosing
Edit->Transition from the main menu. 

You can also add backgrounds by inserting a graphic file, selecting it and
then choosing Presentation->Make background. OHP is supplied with a Gallery
of preset backgrounds that you can access from the Icon Bar menu. 

The OHP editor can do much more but you really need to read the User Manual at
this point. 

Copyright Notes
---------------
OHP_Show is Freeware. We encourage you to copy and distribute it (without
payment) provided: 

* You don't change it in any way. 

* You don't charge for it (except a small charge for any media used).


The full OHP application is a commercial product that you may purchase from
Photodesk; you must not copy or distribute OHP to others. You do not need to
purchase OHP to use OHP_Show (though we'd like you to!). If you have purchased
OHP, you may still find OHP_Show useful - you can send it to others so they can
view your presentations or use it yourself on other computers. It includes all
the presentation effects and controls from OHP but cannot create, change or
save presentations. 

The Artworks Renderer modules are distributed with the kind permission of
Computer Concepts: 

ArtWorks is a trademark of Computer Concepts. The ArtWorks Render modules are
copyright Computer Concepts and cannot be incorporated in any application
without their permission. Contact: Computer Concepts, Gaddesden Place, Hemel
Hempstead, Herts, HP2 6EX. Tel 01442 351000 fax 01442 350010
sales@cconcepts.co.uk 

The PlayIt modules are distributed with the kind permission of Rick Hudson
(rhudson@paradise.net.nz): 

PlayIt is copyright Rick Hudson and licensed for use with OHP. For more
information:
http://homepages.paradise.net.nz/rhudson/index.html 

Thanks to Lenny for the RISC OS 4 icons and to Richard Hallas for the
RISC OS 5 ones.

Thanks also to John Ballance, Rick Hudson and druck - without their unstinting
help when they too were very busy, the RISC OS 5 version of OHP would not have
been possible. Best wishes to the mighty Iyonix! 

Notes for RISC OS 3.50 Users
----------------------------
OHP_Show (and OHP) use the RISC OS Toolbox modules (including the DrawFile
module). These can be freely downloaded from RISC OS Ltd's WWW site (if you are
using Acorn's Internet software, especially !Browse, you already have them). A
version is also supplied on the OHP CD-ROM. 

Notes for RISC OS 3.5 to 4.x Users
----------------------------------
OHP_Show 2.5 is a 26/32-bit neutral application (which is how it can run on
RISC OS 5 too). Pre-RISC OS 5 systems need some key modules (notably the C
Shared Library and the Floating-Point Emulator) updating to support such
applications. The modules are supplied on the OHP CD-ROM. 

Support
-------
Buyers of OHP having difficulty should contact Photodesk Ltd on
+44 (0)1305 822753 (E-Mail chris@photodesk.ltd.uk). 

Maintenance updates are available free of charge from our Web site: 

www.photodesk.ltd.uk 

Photodesk Ltd.
1 The Courtyard,
Southwell Business Park,
Portland,
Dorset.
DT5 2NQ 

