formfield item is the most likely to be useful to casual users.
%META{ "item" ...}%
| Item | Options |  Description |      
|---|---|---|
 "moved"  |       topic="...": Get meta info of "Topic" or "Web.Topic"; default "%BASEWEB%.%BASETOPIC%".  |      Details of any topic moves | 
 "attachments"  |       all="on" to show hidden attachments.title="..." to show a title - only if attachments are displayed.template="..." to use a custom template for the rendering of attachments; default attachtables is used.topic="...": Get meta info of "Topic" or "Web.Topic"; default "%BASEWEB%.%BASETOPIC%".  |      Generates the list of attachments | 
 "parent"  |       dontrecurse="on": By default recurses up tree, this has some cost.nowebhome="on": Suppress WebHome. prefix="...": Prefix that goes before parents, but only if there are parents, default "". format="...": Format string used to display each parent topic where $web expands to the web name, and $topic expands to the topic name; default: "[[$web.$topic][$topic]]" suffix="...": Suffix, only appears if there are parents; default "". separator="...": Separator between parents; default " > ". topic="...": Get meta info of "Topic" or "Web.Topic"; default "%BASEWEB%.%BASETOPIC%".  |      Generates the parent link | 
 "form"  |       topic="...": Get meta info of "Topic" or "Web.Topic"; default "%BASEWEB%.%BASETOPIC%".  |      Generates the table showing the form fields. See Form Templates | 
 "formfield"  |       name="...": name of the field. The field value can be shortened as described in FormattedSearch for $formfield. newline="...": by default, each newline character will be rewritten to <br /> to allow metadata that contains newlines to be used in tables, etc. $n indicates a newline character.bar="...": by default, each vertical bar is rewritten to an HTML entity so as to not be mistaken for a table separator.encode="type": have the value encoded in the specified type. Possible types are the same as ENCODE's. If this is specified, newline and bar options are ignored. topic="...": Get meta info of "Topic" or "Web.Topic"; default "%BASEWEB%.%BASETOPIC%".  |      Show a single form field | 
%META{}% is placed in an included topic. Add a topic="%WEB%.%TOPIC%" parameter if you need meta info of the current topic.
newline, prefix, format, suffix and separator options, such as separator="$n   * "