Home Reinforcement Learning and Artificial Intelligence (RLAI)

Tips, warnings, and frequently asked questions

--Rich Sutton, Sep 12 2004 --Anna Koop, Aug-Sep 2004
The ambition of this page is to help users quickly find out what they need to know about open web pages.  It consists primarily of lists of common questions with links to their answers. 

Warning: the open pages system is no longer being maintained and some of its features may no longer work.  In particular, the email features (subscribe and notify) no longer work reliably and are not recommended.

Editors: Please try to keep this page clean and clear.  It is intended to contain lots of miscellaneous information; we must make sure that it is easy to find.


Why did my most recent attempt to publish fail?

How can I ...
...add a comment to the bottom of an open page?
...edit an open page?
...create a new page?
...recover a previous version of a page?
...upload a non-html file to the server?
...find out who is subscribed to a page?
...find out how many people have read a page?
...set the title for a page?
...make a page that only a few can see and edit?
...make a page that everybody can see but only a few can edit?
...get rid of the RLAI logo and text at the top of the page?
...add a signature mouseover to a page I am editing?
...learn about open web pages?

Why can't I ...
...upload non-html files to the server?
...get rid of the two bottom lines of a page?

Problems:
publishing failed with a red X.
publishing succeeds but...
...only text is displayed.
...the automatic two lines at the bottom are missing.
...images are missing.
...these weird <> tags keep showing up.
I tried to publish a page with an image and it wouldn't work.

What is...
the funny little blue-gray square that you see so often in open pages?

What am I allowed to put on the rlai open page server?

What if I have a question or problem not answered here?




Q: How can I learn about open web pages?


Start by looking at the open-page mission statement and at how to author a page. Please do take time to read the styleguide before you begin editing pages. Links to most of the useful pages can be found at the bottom of each page.



Q: How can I recover a previous version of a page?

The open page server keeps an archive of every version of a page. Click on the "Restore" link at the bottom of the page to view old versions.



Q: How can I upload a non-html file? Why can't I upload non-html files? 

Open pages are for collaborative authoring; they are not places to park read-only content such as PDFs.  These should be located elsewhere and then linked to from the open page.  This is not just a question of resources---it is a separation of functionality.  Open pages try to do collaborative authoring well; this objective would only be diluted by trying to provide miscellaneous web space as well. 

If you think about it, you may realize that you already have access to web space that you can use for read-only web content.  And if you can think of no organization that will provide you with reliable free web space, then perhaps you can understand why an open-page server might also decline to do this.

Separating read-only web content from the open-page server is potentially a problem because it will then be managed differently and may not be reliable.  Unfortunately, this problem may be unavoidable at the current time.  The solution is for someone to provide a service for cheap, reliable, permanent storage of arbitrary web content.  A permanent data store.  It is an interesting challenge.  The person who solves it will become famous and rich.  Creating this service it is not a small undertaking and is best done separately from open pages.



Q: Why can't I get rid of the content at the bottom? 

The content at the bottom is mandatory for every open web page. It is automatically appended to every open file.



Q: How do I set the title of a page?

If you set an </h1> heading in a page then the title will automatically be set to that. Or, in the Mozilla editor, rather than publishing the page, select "Publish As" from the file menu. From there you can set the title before publishing. 



Q: I tried to publish a page with an image and it wouldn't work. 

Do not publish images with spaces, hyphens, periods, or other special characters in their file names. Underbars_are_ok.  There is also a limit on how big images can be, maybe 1 megabyte.  Else click here to find out why publishing failed.



Q: How can I make an open page that is private to a limited group of people?

This is really easy.  You just make the page and don't tell people outside your group about it.  These are called unlisted pages because they are like unlisted telephone numbers---private just because nobody knows about them.  Tell your group members to put the secret URLs in their bookmarks, but not as links on their web pages.  If an unlisted page has a public link to it, then it is no longer unlisted; google will follow it to find the page.



Q: How can I make a semi-private page---publicly readable, but writable only by a limited group of people?

These are also called read-only pages and aliased pages.

What you want is a private page with a public face.  The page is made private by giving it an unlisted or secret URL, as described in the answer to the question immediately above.  The public face is provided by a public alias URL that effectively forwards to the secret URL. Group members browse directly to the page via the secret URL and can therefore edit in the normal way.  But others know only the alias, which can't be edited.

The alias URL must be in a special top-level directory "alias".   For example, on the rlai open server your alias URL might be "/alias/publicnameofpage.html".  The alias URL is created by browsing to it.  This is the same procedure used to create a normal open page, but here in the alias directory it instead creates a hidden link to another URL (which you provide).  If you provide the secret URL of an unlisted page then you will have successfully created a semi-private page.

If you link to a semi-private page, be sure to link to its alias URL and not the secret URL.

Alias URLs don't seem to be working at the moment.



Q: How can I add a signature mouseover to a page I am editing in Composer?

Find a page that already has a mouseover, cut and paste it into your page, then doubleclick it to edit its text.



Q: How can I get rid of the RLAI logo and text at the top of the page?

You just delete them in Composer, the Mozilla editor.  To have this done automatically, for every page you create, see the answer to the next question.




Q: Problem: publishing succeeds but only text is displayed.

You are strongly encouraged to use only .html as an extension. In almost every other case the content will be treated and displayed as plain text. You cannot create an executable program; You may feel free to upload program files, but they will only display as text. Use of the .htm is allowed, but discouraged.



Q: Problem: publishing succeeds but the automatic two lines at the bottom are missing.

You are strongly encouraged to use only .html as an extension. .shtml will display properly, but will not have the Open Web features (the automatic content at the bottom) and will not edit properly. So don't use it. If the automatic content is not displaying on a new page, change the extension to .html. If the extension is .html, weird. Please email.



Q: Problem: publishing succeeds but images are missing.

Rats. This is Mozilla weirdness when you publish multiple times with the "Include images and files" box checked. If you are comfortable working with source code, click on the "<HTML> Source" tab in composer and fix it there. If not, email a description of your problem.



Q: Problem: publishing succeeds but these weird <> tags keep showing up.

This was a problem with early versions of Mozilla/Composer.  Update to a newer version and it should mostly go away.  Not entirely though, so maybe it is best just to delete them and move on.



Q: How can I find out who is subscribed to a page?

The last item in the bottom material (the numbers) gives information about the page, including the subscribers (only the first parts of the subscribers' email addresses are shown). 



Q: How can I find out how many people have read a page?

The two numbers at the end of the page's bottom material are the number of visits to the page and the number of subscribers.



Q: What is the funny little blue-gray square that you see so often in open pages?

This is called a "signature mouseover".  It is just a little image that puts up a text message when the mouse rests momentarily over it.  In open pages they are often used as an inobtrusive way to sign a web page or portion thereof, or to indicate the time at which an extension or other change was made.



Q: How can I find out how many people have read a page?

The two numbers at the end of the page's bottom material are the number of visits to the page and the number of subscribers.


Q: What if I have a question or problem not answered here?

Then we would like to to hear about it so that we can answer it for you or for the next person who has it.  Please click here and type in your question. 











 
please help to open my e-mail  

please help to open my e-mail  

please help to open my e-mail  

i cant open my e-mail.I know my id and password but i try 2 days but my problem still exit,please help cos i lost many addresses .Could you please explain what is happend?  

i cant open my e-mail.I know my id and password but i try 2 days but my problem still exit,please help cos i lost many addresses .Could you please explain what is happend?  

[y is very sad that you cant help me  

[y is very sad that you cant help me  

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