[LyX/master] Document itemize bullets

[Jean-Marc Lasgouttes]

commit 5e2b24c2a9f0d0aae7eb6ac7665b70d0601c7c73
Author: Jean-Marc Lasgouttes <lasgout...@lyx.org>
Date:   Wed Apr 3 12:03:24 2019 +0200

    Document itemize bullets
    
    Make the unicode value explicit as we do elsewhere.
    
    Also change the value used for labeliv, since the current one may be
    square with some fonts.
---
 src/Buffer.cpp |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/src/Buffer.cpp b/src/Buffer.cpp
index 388fbe1..854dd73 100644
--- a/src/Buffer.cpp
+++ b/src/Buffer.cpp
@@ -5153,16 +5153,20 @@ void Buffer::Impl::setLabel(ParIterator & it, 
UpdateType utype) const
                docstring itemlabel;
                switch (par.itemdepth) {
                case 0:
+                       // • U+2022 BULLET
                        itemlabel = char_type(0x2022);
                        break;
                case 1:
+                       // – U+2013 EN DASH
                        itemlabel = char_type(0x2013);
                        break;
                case 2:
+                       // ∗ U+2217 ASTERISK OPERATOR
                        itemlabel = char_type(0x2217);
                        break;
                case 3:
-                       itemlabel = char_type(0x2219); // or 0x00b7
+                       // · U+00B7 MIDDLE DOT
+                       itemlabel = char_type(0x00b7);
                        break;
                }
                par.params().labelString(itemlabel);