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# 5.2 GraphicSubgroupLattice, Protocol of Group Theoretic Constructions

labelloggingfacility XGAP offers the possibility to write a protocol of the group theoretic constructions you perform via mouse clicks. This is convenient because otherwise you have no record of what you did. The normal GAP command script cannot supply this because the menu entries you select do not produce useful output there.

You start the protocol facility by selecting `Start logging` from the `Subgroups` menu. You are prompted for the file name of the protocol with a file selector box. After selecting `OK` in this box, all subsequent actions are logged in the protocol file. You can switch this feature off by selecting `Stop logging` from the `Subgroups` menu.

Note that when you select `SelectedGroups to GAP` from the `Subgroups` menu, the usual GAP logging is also directed to the XGAP log file. This is stopped when you select `InsertVertices from GAP` from the `Subgroups` menu. The idea of this is that you also see the GAP commands you issue within an XGAP session in the XGAP protocol file, if you temporarily work with the keyboard instead of the mouse. See Start logging and Stop logging for a description of the menu entries.

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