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- Problems
- ========
-
- This file is part of ArcWeb, and acts as a troubleshooting guide for those
- who have had difficulty installing, configuring and operating ArcWeb. It
- assumes that you have read 'Instruct' and all the ReadMe files.
-
-
- Question Summary
- ================
-
- Q1. I try to run !ArcWebImg and I get a message saying Find ChangeFSI before
- loading.
-
- Q2. When I try to load !ArcWeb, it says that it requires the DrawFile
- module. What is it and where do I get it?
-
- Q3. When I use the Open URL dialogue box and specify something like
- http://www.demon.co.uk/ in the box, I get an error saying that no fetcher
- is available for that URL.
-
- Q4. When I try to use the Open URL dialogue box to open a local file using
- local: URLs, I get an error saying that no fetcher is available for that
- URL.
-
- Q5. When I try to use the Open URL dialogue box to open a local file using
- riscos: URLs, I get an error saying that no fetcher is available for that
- URL.
-
- Q6. Sometimes when I load a page, the inlined images are not displayed
-
- Q7. I have heard that UniSys have been threatened to enforce a patent on
- the GIF file format, as used by many WWW sites. Does this affect ArcWeb?
-
- Q8. My icon bar is too full with the ArcWebImg and ArcWebLcl icons present
- in addition to the main ArcWeb icon. How can I prevent this?
-
- Q9. I don't have the ArcWebLcl or ArcWebImg icons on the icon bar. How do
- I get them to appear so I can change the configuration?
-
- Q10. How do I change fonts, colours and default options if I don't like
- them?
-
- Q11. How do I set up !ArcWeb for use on a shared network
-
- Q12. I try to run ArcWeb and nothing happens/machine locks up/odd errors
- appear (eg. Permission denied).
-
- Q13. What does icon 'x' do?
-
-
- Questions & Answers
- ===================
-
- Q1. I try to run !ArcWebImg and I get a message saying Find ChangeFSI before
- loading.
-
- A1. ArcWebImg uses ChangeFSI as its image manipulator. It invokes it on the
- command line to transform GIFs, JPEGs and other formats into RISC OS sprite
- files. If the Filer has not seen ChangeFSI, then ArcWebImg does not know
- where it will be able to find this tool. Open a directory viewer containing
- !ChangeFSI and then try to run ArcWebImg again.
-
-
- Q2. When I try to load !ArcWeb, it says that it requires the DrawFile
- module. What is it and where do I get it?
-
- A2. The DrawFile module is a relocatable module written by Acorn which
- provides SWIs for drawing Draw files (as manipulated by !Draw) on the
- screen. ArcWeb uses this module to reduce its own size (since the module
- can be shared by many applications it can reduce memory requirements). You
- can FTP it from from ftp.acorn.co.uk in /pub/riscos/releases/drawfile.arc
-
-
- Q3. When I use the the Open URL dialogue box and specify something like
- http://www.demon.co.uk/ in the box, I get an error saying that no fetcher
- is available for that URL.
-
- A3. ArcWeb is not supplied with fetchers for remote documents. These can be
- found on the FTP server at Demon Internet in /pub/archimedes/www. You need
- to run one of these HTTP fetchers alongside KA9Q (!TCPIP) in order to be
- able to fetch these documents. At the time of writing, there are NO Acorn
- TCP/IP fetchers available. This will change soon.
-
-
- Q4. When I try to use the Open URL dialogue box to open a local file using
- local: URLs, I get an error saying that no fetcher is available for that
- URL.
-
- A4. This may indicate that ArcWebLcl isn't running. ArcWebLcl is required
- in order to fetch local: URLs. If it is running, then this indicates that
- some failure occurred finding the file. This may be because:
-
- i) the filing system you used does not exist
- ii) the URL specified a non-existent file
- iii) you did not specify the URL correctly. Remember that all / and .
- characters after the :: in the filing system name, are transposed.
-
-
- Q5. When I try to use the Open URL dialogue box to open a local file using
- riscos: URLs, I get an error saying that no fetcher is available for that
- URL.
-
- A5. riscos: URLs were handled by earlier versions of ArcWebLcl. This URL
- naming scheme is now obsolete, superceded by local: URLs, which you must now
- use. NOTE: Running on old version of ArcwebLcl alongside the new ArcWebLcl
- will not work, as support for the riscos: name system in ArcWeb itself has
- been removed. This is because separate routines were needed for resolving
- relative references involving riscos: URLs, and these no longer exist.
-
-
- Q6. Sometimes when I load a page, the inlined images are not displayed
-
- A6. This should have been fixed in version 0.13
-
-
- Q7. I have heard that UniSys have been threatened to enforce a patent on
- LZW compression as used by the GIF file format, as used by many WWW sites.
- Does this affect ArcWeb?
-
- A7. No. ArcWeb does not contain any code for handling GIF format graphics
- files. It merely tests files for filetype &695 (GIF) or for starting GIF87a
- or GIF89a. [GIF is a registered trademark (and service mark) of CompuServe
- Inc.]
-
-
- Q8. My icon bar is too full with the ArcWebImg and ArcWebLcl icons present
- in addition to the main ArcWeb icon. How can I prevent this?
-
- A8. Load ArcWebImg and ArcWebLcl and check their configuration carefully.
- You should ensure that the 'Quit on ArcWeb quit' flag is set in particular
- in each program. Save all the options. Now edit the !Run file inside
- !ArcWebImg (hold down SHIFT whilst double clicking on the icon in a Filer
- window). Load the !Run file into !Edit (or your favourite text editor) and
- remove the '-iconbar' option on the last line of the file. Save it again.
- Repeat for !ArcWebLcl. Now, neither of these helpers will install an icon
- bar icon, and they will quit when you kill ArcWeb itself.
-
-
- Q9. I don't have the ArcWebLcl or ArcWebImg icons on the icon bar. How do
- I get them to appear so I can change the configuration?
-
- A9. Edit the !Run file for each application (inside Helpers directory) and
- add -iconbar to the last line in the file. Save it and run the applications
- again and they will install their icons on the icon bar.
-
-
- Q10. How do I change fonts, colours and default options if I don't like
- them?
-
- A10. There are two levels at which the changes can be made - system wide,
- or user specific. ArcWeb checks the following files for font definitions
- and colour schemes in this order: 1) <WebCache$Dir>.Choices
- 2) <ArcWeb$Dir>.Defaults 3) built-in defaults (you can't change these).
-
- If !WebCache is local to your machine and not a per-user installation on a
- network, then you should alter the version in the cache directory.
- (Double-click SELECT on !WebCache and it will open the directory containing
- Choices - edit that file). For network usage, the user should be
- able to change this choices file. System-wide defaults can be set in the
- <ArcWeb$Dir>.Defaults file. This is a copy of the supplied file in the
- cache directory.
-
- Edit the file in order to change the fonts used. Although there is no
- restriction o how you can change the fonts, bear in mind that the italic
- version of the body font should be the same size as the normal version of
- the body font etc., otherwise you will get odd effects. Colours can also be
- changed. You can set the foreground colour as three R,G,B quantities, and
- if you wish you may also specify a further three values representing the
- background colour hint. (See !ArcWeb.Defaults for an example).
-
-
- Q11. How do I set up !ArcWeb for use on a shared network
-
- In order to stop proliferation of ArcWeb into everyone's home directories,
- ArcWeb is willing to cooperate in a network environment. !ArcWeb may be
- installed in a read-only filing system, provided that no -debug option is
- set for any of the helpers (which is the state in which ArcWeb is supplied)
- Users will also need to have seen a !WebCache application to which they have
- exclusive use and to which they have read-write access. Only one instance
- of ArcWeb may use any !WebCache directory.
-
- The system administrator may wish to edit !ArcWeb.!Run to refuse to run if
- Arcweb$CacheDir is not set (as supplied, if it isn't set, it sets it to a
- subdirectory of itself). The system administrator may choose to edit the
- !ArcWeb.Defaults file to change any system wide options.
-
-
- Q12. I try to run ArcWeb and nothing happens/machine locks up/odd errors
- appear (eg. Permission denied).
-
- A12. This might be caused by !WebCache not being installed in a read/write
- filing system. Unless you have appropriate archiving software (eg. SparkFS
- or ArcFS 2), you will have to extract the !WebCache application to a
- writable filing system, and then double-click on the WebCache icon to
- install it.
-
- Q13. What does icon 'x' do?
-
- A13. ArcWeb, ArcWebLcl and ArcWebImg all support interactive help. Load
- the Acorn !Help application and you will be given help about the buttons
- under the pointer when in an ArcWeb window. Note that in the window
- displaying the page itself, the help is purely the URL which would be opened
- if you were to click SELECT.
-
- --
- Stewart Brodie
- 31st January 1995
-