What's New in Version 0.906
===========================
-print call ghostview
-better event manager
-more stable

What's new in version 0.907
===========================
-correction of bugs:
	-chart selection
	-chart units saved
	-reference to cell of other sheet
	-less redraw when cursor move


What's not compatible with previous versions (before 0.906)
===========================================================
Chart:
Title or Axis labels which refer to a cell like 'D4' should be replaced by '=D4'

Function:
Combin(2,10) is now combin (10,2) => similar to Excel
Instr (instring, to find) is now Instr (tofind, instring) => similar to Excel

ABV:
'EndIf' is no more accepted, write 'End If' with a space
the operator '!=' is no more accepted, use '<>'                 

Bugs
====
print with defined  background => white

print selection => depend on what is visible to locate the selection on the printed sheet (if 'centered' is sele
cted)

in object.c, line 233, member is never used... "with" implementation seems wrong           

