I'm going through some code from an inhouse app that my company is running because I need to understand how it works. I understand the following section of code except for the exclamation points. Does anybody know what their purpose is?


'Take the label name, append label type and look for label
str3rdName = Trim(!Label_Type & frm3rdParty.txt3rdlblName & ".QDF")
str3rdPartyFile = Trim(str3rdParty_FilePath & str3rdName)
'Locate the 3rd Party Label in appropriate path
If fso.FileExists(str3rdPartyFile) Then
frmPrinting.Show
frmPrinting.Refresh
'Set the Baytech Port / Com Port and Delay
strPortNo = !Printer_Port
strProd_line = !Production_Line
strPort_Name = !Port_Name
Set_Printer_Port