Fossil

The <b>W</b> card is used to specify the text of the wiki page.  The
argument to the <b>W</b> card is an integer which is the number of bytes
of text in the wiki page.  That text follows the newline character
that terminates the <b>W</b> card.  The wiki text is always followed by one
extra newline.

The <b>C</b> card on a wiki page is optional.  The argument is a comment
that explains why the changes were made.  The ability to have a <b>C</b>
card on a wiki page artifact was added on 2019-12-02 at the suggestion
of user George Krivov and is not currently used or generated by the 
implementation. Older versions of Fossil will reject a wiki-page
artifact that includes a <b>C</b> card.

An example wiki artifact can be seen
[/artifact?name=7b2f5fd0e0&txt=1 | here].

The ticket-id is given in the <b>K</b> card.  A ticket exists if it contains one or
more changes.  The first "change" to a ticket is what brings the
ticket into existence.

<b>J</b> cards specify changes to the "value" of "fields" in the ticket.
If the <i>value</i> parameter of the <b>J</b> card is omitted, then the
field is set to an empty string.
Each fossil server has a ticket configuration which specifies the fields it
understands.  The ticket configuration is part of the local state for
the repository and thus can vary from one repository to another.
Hence a <b>J</b> card might specify a <i>field</i> that does not exist in the
local ticket configuration.  If a <b>J</b> card specifies a <i>field</i> that
is not in the local configuration, then that <b>J</b> card
is simply ignored.

The first argument of the <b>J</b> card is the field name.  The second
value is the field value.  If the field name begins with "+" then
the value is appended to the prior value.  Otherwise, the value

<h3 id="event">2.7 Technical Notes</h3>

A technical note or "technote" artifact (formerly known as an "event" artifact)
associates a timeline comment and a page of text
(similar to a wiki page) with a point in time.  Technotes can be used
to record project milestones, release notes, blog entries, process
checkpoints, or news articles.
The following cards are allowed on a technote artifact:

<div class="indent">
<b>C</b> <i>comment</i><br>
<b>D</b> <i>time-and-date-stamp</i><br />
<b>E</b> <i>technote-time</i> <i>technote-id</i><br />
<b>N</b> <i>mimetype</i><br />
<b>P</b> <i>parent-artifact-id</i>+<br />

second argument is the single character "<b>*</b>" instead of an
artifact ID and the name is always prefaced by "<b>+</b>".
The <b>*</b> in place of the artifact ID indicates that
the tag or property applies to the current artifact.  It is not
possible to encode the current artifact ID as part of an artifact,
since the act of inserting the artifact ID would change the artifact ID,
hence a <b>*</b> is used to represent "self".  The "<b>+</b>" on the
name means that tags can only be "add" and they can only be non-propagating
tags.  In a technote, <b>T</b> cards are normally used to set the background
display color for timelines.

The optional <b>U</b> card gives the name of the user who entered the technote.

A single <b>W</b> card provides wiki text for the document associated with the
technote.  The format of the <b>W</b> card is exactly the same as for a
[#wikichng | wiki artifact].

The <b>Z</b> card is the required checksum over the rest of the artifact.