diff --git a/tconfpy.py b/tconfpy.py
index 55d8fd8..0b56254 100755
--- a/tconfpy.py
+++ b/tconfpy.py
@@ -6,7 +6,7 @@
 # Program Information
 
 PROGNAME = "tconfpy"
-RCSID = "$Id: tconfpy.py,v 1.114 2004/03/14 09:57:13 tundra Exp $"
+RCSID = "$Id: tconfpy.py,v 1.115 2004/03/14 20:59:08 tundra Exp $"
 VERSION = RCSID.split()[2]
 
 # Copyright Information
@@ -80,10 +80,11 @@
 
 # Control and conditional symbols
 
-INCLUDE     = ".include"
-ENDIF       = ".endif"
-IF          = ".if"
-IFNOT       = ".ifnot"
+CONDINTRO   = '.'          # Conditional introducer token
+INCLUDE     = CONDINTRO + "include"
+ENDIF       = CONDINTRO + "endif"
+IF          = CONDINTRO + "if"
+IFNOT       = CONDINTRO + "ifnot"
 
 Reserved    = ["DELIML", "DELIMR", "DOLLAR", "EQUAL", "EQUIV", "NOTEQUIV",
                "HASH", "INCLUDE", "ENDIF", "IF", "IFNOT"]
@@ -187,8 +188,9 @@
 
 dDEBUG      = "DEBUG"
 
-dBLANKLINE  = "(Parsed To Blank Line - Ignored)"
-dLINEIGNORE = FILENUM + "   Line Ignored/Not Included" + PTR + "'%s'\n"
+dBLANKLINE  = "Parsed To Blank Line - Ignored"
+dLINEIGNORE = FILENUM + "  '%s' " + PTR + "%s\n"
+dNOTINCLUDE = "Line Ignored/Not Included"
 dNUMLINES   = "Processing File '%s' Resulted In %d Total Lines Parsed"
 dPARSEDLINE = FILENUM + "  '%s'" + PTR + "'%s'\n"
 
@@ -357,7 +359,7 @@
 # Dereference Variables
 ##########
 
-def DerefVar(line, cfgfile, linenum):
+def DerefVar(line, cfgfile, linenum, reporterr=True):
 
     # Find all symbols refrences and replace w/sym table entry if present
 
@@ -370,7 +372,16 @@
 
         # Reference to undefined variable
         else:
-            ErrorMsg(eVARUNDEF % (cfgfile, linenum, sym))
+            # There are times a reference to an undefined variable
+            # should not produce and error message.  For example,
+            # during existential conditional processing, we just
+            # want to check whether variables are defined or not.
+            # Attempts to reference undefined variables are legitimate
+            # in this case and ought not to generate an error message.
+
+            if reporterr:
+                ErrorMsg(eVARUNDEF % (cfgfile, linenum, sym))
+
             ref_ok = False
             
     return line, ref_ok
@@ -463,7 +474,7 @@
 
         if not CondStack[-1]:
             if DEBUG:
-                DebugMsg(dLINEIGNORE % (cfgfile, linenum, orig))
+                DebugMsg(dLINEIGNORE % (cfgfile, linenum, orig, dNOTINCLUDE))
             return
 
         #####
@@ -487,10 +498,10 @@
         #
         #####
 
-        if line.startswith(IF) or line.startswith(IFNOT):
+        if line.startswith(IFNOT) or line.startswith(IF):
 
             # NOTE: This next bit of logic will fail if you do not
-            #       test the longer of the two tokens first!!!!
+            #       test the longest of the tokens first!!!!
             
             if line.startswith(IFNOT):
                 line = line.split(IFNOT)[1].strip()
@@ -503,6 +514,10 @@
             if line.count(EQUIV):
                 pass
 
+            # Handle InEquality Form: ".if string != string"
+            elif line.count(NOTEQUIV):
+                pass
+
             # Handle Existential Forms ".if/.ifnot string"
             else:
 
@@ -510,7 +525,7 @@
                 if len(VarRef.findall(line)) > 0:
 
                     # See if the variable(s) resolve
-                    line, ref_ok = DerefVar(line, cfgfile, linenum)
+                    line, ref_ok = DerefVar(line, cfgfile, linenum, reporterr=False)
 
                     # If we're using '.ifnot', invert the sense of the logic
                     if invert:
@@ -528,6 +543,7 @@
                 else:
                     ErrorMsg(eBADCOND % (cfgfile, linenum, eNOVARREF, orig))
 
+
         line, ref_ok = DerefVar(line, cfgfile, linenum)
 
             
@@ -540,9 +556,12 @@
 
         # Note blank lines for debug purposes
         if not line:
-            line = dBLANKLINE
+            DebugMsg(dLINEIGNORE % (cfgfile, linenum, orig, dBLANKLINE))
 
-        DebugMsg(dPARSEDLINE % (cfgfile, linenum, orig, line))
+        else:
+            DebugMsg(dPARSEDLINE % (cfgfile, linenum, orig, line))
+
+
 
 # End of 'ParseLine'