Option Explicit

Sub TrueTitleCase()
Dim sText As Range
Dim vFindText As Variant
Dim vReplText As Variant
Dim i As Long
Dim k As Long
Dim m As Long
    Set sText = Selection.Range
    'count the characters in the selected string
        k = Len(sText)
        If k < 1 Then
        'If none, then no string is selected
        'so warn the user
        MsgBox "Select the text first!", vbOKOnly, "No text selected"
        Exit Sub 'and quit the macro
        End If
    'format the selected string as title case
    sText.Case = wdTitleWord
    'list the exceptions to look for in an array
    vFindText = Array("A", "An", "And", "As", "At", "But", "By", "For", _
    "If", "In", "Of", "On", "Or", "The", "To", "With")
    'list their replacements in a matching array
    vReplText = Array("a", "an", "and", "as", "at", "but", "by", "for", _
    "if", "in", "of", "on", "or", "the", "to", "with")
    With sText
        With .Find
        'replace items in the first list
        'with the corresponding items from the second
        .ClearFormatting
        .Replacement.ClearFormatting
        .Forward = True
        .Wrap = wdFindStop
        .MatchWholeWord = True
        .MatchWildcards = False
        .MatchSoundsLike = False
        .MatchAllWordForms = False
        .Format = True
        .MatchCase = True
        For i = LBound(vFindText) To UBound(vFindText)
        .Text = vFindText(i)
        .Replacement.Text = vReplText(i)
        .Execute Replace:=wdReplaceAll
        Next i
    End With
    'Reduce the range of the selected text
    'to encompass only the first character
    .MoveEnd Unit:=wdCharacter, Count:=-Len(sText) + 1
    'format that character as upper case
    .Case = wdUpperCase
    'restore the selected text to its original length
    .MoveEnd Unit:=wdCharacter, Count:=k
    'and check to see if the string contains a colon
    If InStr(1, sText, ":") > 0 Then
    'If it does note the position of the character
    'after the first colon
    m = InStr(1, sText, ":") + 1
    'and set that as the new start of the selected text
    .MoveStart wdCharacter, m
    'set the end of the selected text to include
    'one extra character
    .MoveEnd Unit:=wdCharacter, Count:=-Len(sText) + 1
    'format that character as upper case
    .Case = wdUpperCase
    End If
    End With
    lbl_Exit:
    Exit Sub
    End Sub