checking that committing works
Revert "checking that committing works"

This reverts commit 208bf017e2f04dac9d892cf097f84c2996e45a54.
Edited some sentences in the introductory paragraphs
Added list of reserved words.
added intro to overarching example and removed brackets around < in text
fixed ie and iether and made some changes to the line about bodmas
added an if
Changed some text in a paragraph
added brackets for a print call
changed <b> tags in a paragraph to <emph> tags
added brackets for a print statement
added a = and replaced a link with a short paragraph
added brackets to print statements in an example
added brackets to print statements in an example
added brackets to print statements in two examples
added brackets to print statements in an example and added missing word to a paragraph
fixed an either
changed indentating to indenting
changed cass to case
fixed a print statement