Padding for superscript and subscript axis labels in gnuplot

By default gnuplot doesn't align superscripts and subscripts:

T_c^{/Symbol \245}

But, that leaves an ugly space between the symbol and superscript. You can force alignment with an @ character:

T@_c^{/Symbol \245}

 This works fine for standard characters, but for slanted variables, the align character makes the superscript overlap. To fix this we insert a partial before the infty symbol in the superscript. To do this we combine two text effects, blank characters &{a} and font size scaling {/* }:

T@_c^{{/*0.5 &{c}}{/Symbol \245}}

To give the desired result. You can change the factor 0.5 to whatever you need, with 1.0 being full character width.