To open the Browser in Hach WIMS start by editing the variable you want (in Hach WIMS Client on the menu bar, select System Setup > Edit/View Variables then find your variable then click on the Interface tab).

Then click on the "?" button to the right of the TAG text field:

The Browser will appear as shown below, with fields blank when you first enter the screen:

Select values from the drop down in order that they appear, top to bottom.

Profile Name -  this is the Profile Name for the Target source in the Dispatcher when using Hach WIMS Cache type. The value can also be found in the UniqueName field of the Profile table of the Hach WIMS Cache database.

Server Name - this is the server name of source data and can be found in the OPSDATAXML revision 3 data files that the Dispatcher imported data from. The server name is found in the s_id field of these XML files. The value can also be found in the Name field of the Server table of the Hach WIMS Cache database.

Tag - this is the tag name that the source data uses to identify components in the treatment plant and can be found in the OPSDATAXML data files that the Dispatcher imported data from. The tag name is found in the t_id field in these XML files.
The value can also be found in the Tag field of the Tag table of the Hach WIMS Cache database.

Notice that the entire TAG field is shown at the bottom of the browser