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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xgap manual