st: issue with grc1leg for graph bar

[tashi lama <ltashi32@hotmail.com>]

Hello all, 
     graph hbar (sum) doc_published doc_read doc_unread, nolabel legend(row(1))  name(tt1, replace) nodraw
     graph hbar doc_published doc_unread doc_read, over(text_value) nolabel stack name(tt2, replace) nodraw
     grc1leg tt1 tt2, legendfrom(tt1) 

The above is part of an adofile and when I run adofile in windows, stata displays tt1 then vanishes, stata displays tt2 and vanishes before finally displaying tt1 and tt2. I was thinking stata wouldn't tease me with tt1 and tt2 but would just display the final one. The funny thing is when I do graph pie instead of graph bar
     graph pie doc_published doc_read doc_unread,  name(tt1, replace) nodraw
     graph pie doc_published doc_unread, name(tt2, replace) nodraw
     grc1leg tt1 tt2, legendfrom(tt1) 
stata only displays me the final image which is exactly I want. COuld someone please explain? 

Thanks, 
Tashi  		 	   		  
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