# wiki help

Wikis should be easy to edit, so most text you add or change will appear as you expect it. But you can do more if you want.

This wiki is in open-edit mode (except during phases of spam or vandalism). If you want your name (or nick) to appear in the histories, you should create a Wikispaces account and join this wiki. (see How to Get Your Xenwiki Account)

What you always have dreamed of (for your paper notes) - in a wiki it becomes true: fast links!

If you enclose a word in double brackets (like [[word]]), you get a link, hopefully to an already existing page - if not, you just created the opportunity for your co-authors to add the details. If you want a text differing from the link target, you can place it after a pipe symbol [[word|different text]]. The same syntax can be used for external links like [[http://en.wikipedia.org|English Wikipedia]] for a link to the English Wikipedia.

tbd
The link text should relate to the link target, don't use "here".

### Redirects

Real or "hard" redirects can only be made or edited by administrators of the wiki, and a hard redirect cannot link to a specific section of another article. Therefore, they should only be used in the case of simple misspellings or alternate spellings. The rule is that if anyone might ever want to flesh the redirect out into its own article, it should not be a hard redirect.

For all other cases, create a "soft redirect" or "smart redirect". This is just an ordinary page with the text "See XYZ.", where XYZ is a link to the target of the smart redirect.

A smart redirect should not point to another smart redirect - if you see this you should fix it by shortcutting past the second one and making the first redirect point directly to the ultimate target.

However, hard redirects can be chained with no problem, which is why they're still appropriate to use for misspellings.

## Page layout

### Emphasis

Some typographic markup can easy be added by including the phrase in doubled * (asterisk) or / (slash) chars:
• italic using //italic//
• bold using **bold**
• bold italic using **//bold italic//**
• or italic bold using //**italic bold**//

### Lists

You can create bulleted lists by one or more * (asterisk) chars at the beginning of the line:
• first level
• second level
• second level
• first level

You can create numbered lists by one or more # (number sign) at the beginning of the line:
1. first level
1. second level
2. second level
2. first level

...and you can of course mix both, if you know what you're doing ;)
1. first level
• second level
1. second level
• first level

### Tables

You can add tables with doubled | (pipe) chars:

what you want for the cell
what you do to get it
left aligned text
nothing to do
centered text
equals sign (=) immediately after the opening double pipe
right aligned
greater-than sign (>) immediately after the opening double pipe
title (~) immediately after the opening double pipe

Wikispaces' handling of tables is pretty basic; control over column widths, padding, etc. is not offered. Some control is possible via CSS and JavaScript; see Advanced formatting of wiki pages for details.

### Images

Inserting a JPEG or PNG image is pretty straightforward - when using the visual page editor click the "File" button and upload the image. Or in Wikitext, use [[image:filename]]. SVG images are possible but require a bit more work; see SVG images on wiki pages for details.

### Maths formulas

...can be used like in the Wikipedia but the enclosing tags ([[math]] - the same for begin and end) differ. Take care: using the math tags you'll break paragraphs.

$V =\frac{4}{3} \pi r^3$

Here is a browser-based formula editor that may be helpful: http://www.codecogs.com/latex/eqneditor.php

Place [[toc]] on top of the page, or - if you prefer flat tocs - use [[toc|flat]]

Note: when using flat tocs, a horizontal ruler ---- and an empty line may improve the layout.

## Social aspects

In Wikispaces wikis, you can use tags and discussions.
If you want to discuss the wiki itself, do it on the page wikifuture.

### Tags

Tags all serve different purposes: sometimes they say what something is or the context in which it belongs (edo, interval). Sometimes they are used for annotation purposes (todo:reduce mathslang), etc. All these forms have in common is that they can combine wiki pages in a way that is independent of their authors.

You can look at the list of used tags or link to particular tags using the prefix http://xenharmonic.wikispaces.com/tag/view/

Some tag examples:

### Discussion

Discussion pages are provided to each content page. Sadly there is no preview function on this wiki, but if you create something entirely wrong, you can delete your post. Please keep in mind that the email notification to people who are monitoring the topic or wiki cannot be taken back!

Sometimes you will wait forever for a reply because nobody monitors the page or topic. In this case you should find out who is most familiar with the topic and ask that person directly. You can check the history of pages for its authors. Another approach is to ask questions on further media, examples are listed on the page GeneralDiscussion.