An instruction manual is an important thing. H stands for heading A stands for access T stands for typography S stands for space
Heading should be in bold, as there are different features used when writing a document. In the heading area, you should put the major areas to be covered. In important things, they are bolded or italicized. Spacing is also important, as when reading a manual, a user is not wanting everything to be crunched together.
Chemical formula tells us the number of atoms of each element in a compound. It contains the symbols of the atoms of the elements present in the compound as well as how many there are for each element in the form of subscripts.
