Update user guide regarding @{EMPTY} variable
Update user guide regarding @{EMPTY} variable

kurtdawg24/robotframework,ChrisHirsch/robotframework,yahman72/robotframework,wojciechtanski/robotframework,wojciechtanski/robotframework,SivagnanamCiena/robotframework,JackNokia/robotframework,yahman72/robotframework,ChrisHirsch/robotframework,yonglehou/robotframework,ashishdeshpande/robotframework,kyle1986/robortframe,Colorfulstan/robotframework,nmrao/robotframework,joongh/robotframework,userzimmermann/robotframework,snyderr/robotframework,jaloren/robotframework,jorik041/robotframework,userzimmermann/robotframework,yonglehou/robotframework,SivagnanamCiena/robotframework,joongh/robotframework,SivagnanamCiena/robotframework,xiaokeng/robotframework,snyderr/robotframework,jaloren/robotframework,alexandrul-ci/robotframework,kyle1986/robortframe,edbrannin/robotframework,ashishdeshpande/robotframework,robotframework/robotframework,ashishdeshpande/robotframework,nmrao/robotframework,synsun/robotframework,eric-stanley/robotframework,jorik041/robotframework,SivagnanamCiena/robotframework,yahman72/robotframework,rwarren14/robotframework,stasiek/robotframework,wojciechtanski/robotframework,nmrao/robotframework,rwarren14/robotframework,un33k/robotframework,fingeronthebutton/robotframework,kyle1986/robortframe,synsun/robotframework,alexandrul-ci/robotframework,dkentw/robotframework,rwarren14/robotframework,dkentw/robotframework,suvarnaraju/robotframework,alexandrul-ci/robotframework,fingeronthebutton/robotframework,yonglehou/robotframework,un33k/robotframework,dkentw/robotframework,JackNokia/robotframework,suvarnaraju/robotframework,userzimmermann/robotframework,HelioGuilherme66/robotframework,joongh/robotframework,alexandrul-ci/robotframework,xiaokeng/robotframework,wojciechtanski/robotframework,Colorfulstan/robotframework,synsun/robotframework,edbrannin/robotframework,jaloren/robotframework,fingeronthebutton/robotframework,fingeronthebutton/robotframework,rwarren14/robotframework,alexandrul-ci/robotframework,jorik041/robotframework,moto-timo/robotframework,edbrannin/robotframework,fingeronthebutton/robotframework,ChrisHirsch/robotframework,userzimmermann/robotframework,suvarnaraju/robotframework,dkentw/robotframework,userzimmermann/robotframework,SivagnanamCiena/robotframework,edbrannin/robotframework,un33k/robotframework,jaloren/robotframework,xiaokeng/robotframework,joongh/robotframework,joongh/robotframework,suvarnaraju/robotframework,jorik041/robotframework,kyle1986/robortframe,moto-timo/robotframework,yahman72/robotframework,kyle1986/robortframe,snyderr/robotframework,JackNokia/robotframework,ChrisHirsch/robotframework,robotframework/robotframework,suvarnaraju/robotframework,stasiek/robotframework,ashishdeshpande/robotframework,stasiek/robotframework,robotframework/robotframework,xiaokeng/robotframework,edbrannin/robotframework,snyderr/robotframework,moto-timo/robotframework,stasiek/robotframework,wojciechtanski/robotframework,HelioGuilherme66/robotframework,ashishdeshpande/robotframework,jorik041/robotframework,kurtdawg24/robotframework,jaloren/robotframework,Colorfulstan/robotframework,un33k/robotframework,eric-stanley/robotframework,HelioGuilherme66/robotframework,stasiek/robotframework,rwarren14/robotframework,ChrisHirsch/robotframework,nmrao/robotframework,kurtdawg24/robotframework,moto-timo/robotframework,yonglehou/robotframework,un33k/robotframework,synsun/robotframework,eric-stanley/robotframework,eric-stanley/robotframework,JackNokia/robotframework,yonglehou/robotframework,Colorfulstan/robotframework,nmrao/robotframework,xiaokeng/robotframework,synsun/robotframework,yahman72/robotframework,moto-timo/robotframework,dkentw/robotframework,Colorfulstan/robotframework,kurtdawg24/robotframework,JackNokia/robotframework,snyderr/robotframework,kurtdawg24/robotframework