# fragment compute command

Syntax

fragment compute <keyword>

Primary keywords:

Compute fragments. The current cycle number and mechanical age are used to identify the record in the fragment history. The fragment IDs are assigned to bodies. Bodies with the fragment ID 0 are isolated. If the fragment persistence is turned off, though, isolated bodies are assigned unique fragment indices (see fragment register). The fragment register command must be given prior to issuing the fragment compute command.

group-isolated s <slot slot >

Assign the group name s to slot slot only for isolated fragments.

group-slot s

Assign the fragment names to groups in slot s.