I have no relation to mindbuilder.com. I only noticed that they existed some time after I started using this name.

Cheatsheet

Wiki Markup

My sandbox

The following are just my notes on wikipedia syntax

To create a line break use enter twice
Link to another wikipedia article
  [[Siphon]]
Disambiguate the link
  [[Siphon (Insect anatomy)]]
Visible text different than link text
  [[Siphon|Cool article on Siphons]]
Show unit conversion
  {{convert|17|ft|m|sigfigs=3}}
Numerical Value with thousands spaces and optionally with units
  {{val|123.456}} or
  {{val|123.456|u=grams}}
  {{val|123.456|ul=grams}}  //units linked
  {{val|123.456|u=m|up=s}}  //units and units per  e.g.  m/s
Pi symbol π
  {{pi}}
Degree symbol °
Approximately equal symbol ≈
Exactly equal symbol ≡
Preformatted text
  Cant show it here. See source or just pre in standard html start stop slash angle bracket tags.
Suppress Wiki markup
  Cant show it here. See source or just nowiki in standard html start stop slash angle bracket tags.
Indent with one or multiple colons
  :
Outdent when indentation gets to much
  {{od}}
Link to another section of the same article by starting with a hash.
Use a display string after a bar to prevent the hash symbol from showing.
The link is to a section with a section title. It may be possible to link to an anchor or something.
  [[#Knuckle Mnemonic]]  or
  [[#Knuckle Mnemonic|Pretty text to be displayed here]]

Insert an image in talk page. This works for Wikimedia Commons as well. Upload to Commons is quick and simple with javascript disabled.
  [[Image:SiphonAnalogyTrucksOnCrestOpposingForcesNotCanceling.png|upright|thumb|center|480px|OptionalExampleCaptionHere]]

Insert a video in an article (thumbtime is the time from where the still picture is taken, by default the middle of the vid)
  [[File:AirLaunchSiphon.ogv |thumbtime=0 |thumb |right | Air Launch Siphon Demonstration.]]

Reference
  <ref name=ExampName>http://www.example.com   Optional descriptive text</ref>
  then for repeat reference to same.
  <ref name=ExampName/>
  can make a reference show up in the talk page at the desired location with {{reflist-talk}}
  can insert a plain simple reference while in WYSIWYG mode by clicking cite then basic

Comments within source of wiki page
  <!-- example comment here -->

Link to Wikipedia policy pages
  [[WP:OR]]   or   [[WP:BLP]]   etc.

Italics: two apostrophes on each ''side''
Bold: three apostrophes on each '''side'''
Bold and italic: five apostrophes on each '''''side'''''

Signing - you can copy the time/date/IP from the history page to sign a post with
  {{subst:xsign|  TimeDateIPAddressStringHere  }}
  five tildes gives date without username ~~~~~

Quote in Green only in talk pages - it doesn't seem to indent
  {{tq|QuoteTextHere}}