Editing Family tree (section)

== Common formats ==
In addition to familiar representations of family history and genealogy as a tree structure, there are other notable systems used to illustrate and document ancestry and descent.

=== Ahnentafel ===
{{Main|Ahnentafel}}
[[File:Waldburg Ahnentafel.jpg|thumb|An ''[[ahnentafel]]'' family tree displaying an ancestor chart of [[Sigmund Christoph von Waldburg-Zeil-Trauchburg|Sigmund Christoph, Graf von Zeil und Trauchburg]]]]

An ''[[Ahnentafel]]'' ([[German language|German]] for "ancestor table") is a [[genealogical numbering system]] for listing a person's direct ancestors in a fixed sequence of ascent:
# Subject (or [[proband]])
# Father
# Mother
# Paternal grandfather
# Paternal grandmother
# Maternal grandfather
# Maternal grandmother
and so on, back through the generations. Apart from the subject or [[proband]], who can be male or female, all even-numbered persons are male, and all odd-numbered persons are female. In this [[conceptual model|scheme]], the number of any person's father is double the person's number, and a person's mother is double the person's number plus one. This system can also be displayed as a tree:
[[File:Family Tree Sample.jpg|thumb|An ''[[ahnentafel]]'' family tree, showing three generations of the [[Kennedy family]]]]
{{ahnentafel
|width=25%
|1 Subject (or [[proband]])
|2. Father
|3. Mother
|4. Paternal grandfather
|5. Paternal grandmother
|6. Maternal grandfather
|7. Maternal grandmother
}}

=== Fan chart ===
[[File:Fan-chart-example-gramps5.0.1win10.png|thumb| Screenshot of [[Gramps (software)|Gramps]] (v. 5.0.1) displaying a fan chart and the given name cloud gramplet on the bottom]]
A fan chart features a half circle chart with concentric rings: the subject is the inner circle, the second circle is divided in two (each side is one parent), the third circle is divided in four, and so forth. Fan charts depict paternal and maternal ancestors.