I have the other side of this problem where I have a variable named clump1 and I want to say clump1 = 7.0; So I type c1 and sure enough, clump1 is highlighted so I hit the spacebar and it leaves the c1 and puts in the space. If I press the = then it puts in clump1= which I expected, but I also expected the space bar to accept the suggestion. Is there a setting that I am missing?