To ensure that document files can be viewed on various operating systems, we have decided to insert images of chemical formulas and mathematical formulas into the document on the lower half of the screen. For example, the image might be displayed on the left edge and the following document on the right-hand side. It remains a challenge to overcome technical limitations and display each image in its proper position in the document. For the time being, chemical formulas, mathematical formulas, and all numbers with exponents are transcribed as follows.

Accurate transcription | Alternative transcription |

H_{2}O |
H2O or H_2O |

(CH)_{n} |
(CH)n or (CH)_n |

La_{2-x}Sr_{x}CuO_{4} |
La2-xSrxCuO4 or La_{2-x}Sr_xCuO_4 |

10^{-20} |
10^{-20} |

x^{2} |
x^2 |

x_{ij} |
xij or x_{ij} |