Internally, the workspaces are numbered by the numbering convention wsn, where n is 0, 1, 2, and so on. For example, the default four workspaces are numbered internally ws0 through ws3.
Dtwm*wsn: name
For information about setting Workspace Manager resources, see Setting Application Resources.
For example, the following resources set the default four workspaces to the specified names:
Dtwm*ws0*title: Anna Dtwm*ws1*title: Don Dtwm*ws2*title: Julia Dtwm*ws3*title: Patti