indent a selection in gvim (win32)

How to indent a selection of lines  in gvim 7.2 on windows XP SP3?

I had read

http://vimdoc.sourceforge.net/cgi-bin/vimfaq2html3.pl#14.8

http://stackoverflow.com/questions/318923/how-to-indent-a-selection-in-gvim-win32

I try setting or unsetting the following:

set selectmode=key

behave xterm

Then I select several lines with a mouse.

Pressing the "Shift" ">" keys together result in either nothing is indented or the following appear in gvim:

+--  4 lines: var words = count.split(/\s/);---------------------------------

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