Editing Fun cluster (section)

== Xerox Star ==
One of the earliest computer systems with a fun cluster was the '''Xerox Star''', one of the earliest systems with a graphical user interface.
''Drag and Drop'' had not yet been invented, so named keys in the fun' cluster on the left were used together with mouse clicks to perform actions.
There was also named keys on the top of the keyboard for formatting text.

Some actions of the keys in the function cluster are these days most often available as commands in context menus. For example, the "PROP'S" key opened a "Properties" dialogue-box for the selected object.

Early keyboards had a cluster on the left:
{| class="key-layout"
|-
| AGAIN
| class="key-1-5u" | DELETE
|-
| FIND
| class="key-1-5u" | COPY
|-
| SAME
| class="key-1-5u" | MOVE
|-
| OPEN
| class="key-1-5u" | Props
|}

... and a cluster on the right:
{| class="key-layout"
|-
| rowspan="2" | <u>SKIP</u><br/>N<br/>E<br/>X<br/>T
| class="key-1-5u" | HELP
| rowspan="2" | UNDO
|-
| class="key-1-5u" | MARGINS
|-
| rowspan="2" | <u>DEF'N</u><br/>E<br/>X<br/>P<br/>A<br/>N<br/>D
| class="key-1-5u" | FONT
| rowspan="2" | STOP
|-
| class="key-1-5u" | KEYBOARD
|-
|}

Later keyboards omitted the right cluster for a numeric keypad, and the
left cluster was extended and rearranged into:
{| class="key-layout"
|-
| STOP
| class="key-1-5u" | DEL
|-
| UNDO
| class="key-1-5u" | AGAIN
|-
| FIND
| class="key-1-5u" | COPY
|-
| SAME
| class="key-1-5u" | MOVE
|-
| HELP
| class="key-1-5u" | PROP'S
|}