This is an example of conversion I am trying to do in Calibre to convert a RTF file into an LRF file. The subscript and superscript increase the line spacing for those lines and it doesn't look very nice.
	The quick brown fox sometimes jumps over the lazy dog and he is waiting to jump back over the sprightly fox sometimes but just can't get the energy, possibly he needs some H2O or maybe he might want another tipple possibly some beer to give him some hydration so that he can get up and do some much needed jumping.
	This is yet another section where we will try out some mathematics and see what happens when we have something squared for example ten to the power of 6 which should be 106 and I would like this to not increase the line spacing of the output file.