Yes, using the '#Uses directive to incorporate a global set of constants and functions into a script.
See http://www.nuance.com/products/help/dragon/dragon-for-pc/scriptref/Content/vbs/uses_comment.htm
So, for example, I have a global file that includes many constants and functions which can be used by any script that starts with:
'#Uses "C:\Scripts\pgGlobal.bas.txt"
You can use it to define constants:
Public Const myWait = "0.3"
Here is but one function and its associated constants (but you can just literally define constants by themselves, too, as above):
Declare Function GetSystemMetrics Lib "user32" (ByVal nIndex As Long) As Long
' Use this function to get System parameters (screen, mouse, etc.)
'
Public Const SM_CXSCREEN = 0 ' The width of the primary display monitor.
Public Const SM_CYSCREEN = 1 ' The height of the primary display monitor.
Public Const SM_XVIRTUALSCREEN = 76 ' The left side of the virtual screen.
Public Const SM_YVIRTUALSCREEN = 77 ' The top of the virtual screen.
Public Const SM_CXVIRTUALSCREEN = 78 ' The width of the virtual screen.
Public Const SM_CYVIRTUALSCREEN = 79 ' The height of the virtual screen.
Public Const SM_CMONITORS = 80 ' The number of display monitors.
'
And it gets called like so:
'#uses "C:\Scripts\pgGlobal.bas.txt"
Sub Main
MsgBox "Primary Width: " & GetSystemMetrics(SM_CXSCREEN) & _
" x Primary Height: " & GetSystemMetrics(SM_CYSCREEN) & vbCrLf & _
"Number of monitors: " & GetSystemMetrics(SM_CMONITORS) & vbCrLf & _
"Total Width: " & GetSystemMetrics(SM_CXVIRTUALSCREEN) & _
" x Total Height: " & GetSystemMetrics(SM_CYVIRTUALSCREEN) & vbCrLf & _
"Left Pixel: " & GetSystemMetrics(SM_XVIRTUALSCREEN) & _
" x Top Pixel: " & GetSystemMetrics(SM_XVIRTUALSCREEN)
End Sub
to give me a message box having all those parameters.